Sorry, but I'm going to pick nits with a lot of the early stuff.
2. 1984: Both release critically acclaimed full-length albums. Both bands tour incessantly and build audiences despite little to no airplay (QR did have a minor hit with Take Hold of the Flame)
The Warning and Ride the Lightning were "critically acclaimed"? I'm honestly I'm not sure I read any contemporary reviews, but going by the "professional ratings" section of the Wikipedia article for The Warning, it was anything but "critically acclaimed." The album also seems to get a lot of crap from fans for its production. The same section at the RTL page is much different, but I suspect those are mostly after-the-fact ratings. Also, in terms of metal in the mid-80s, Take Hold of the Flame was more than a "minor hit."
3. 1986: Both release their third album. Metallica's MoPuppets is arguably their critical apex and they quickly become thrash metal standard bearers. QR's RFOrder goes relatively unnoticed in comparison. At this point they are popular in underground metal circles but relatively unknown to the general public.
So...this is not a parallel at all. Also, by this point, Metallica had moved well beyond "underground metal circles." Also also, while Metallica eventually became well-known to the general public, QR never really did. They sort of poked their heads through the door with Silent Lucidity but were quickly ushered out.
4. 1988: Both bands release ambitious, sprawling, unapologetic prog-metal masterpieces. Established fans enthusiastically embrace both releases and in both cases neither receive commercial upon release. Then both albums surge to commercial heights a full year later when MTV begins playing videos for One and Eyes of A Stranger.
I can't say there's anything wrong with these statements, but Metallica was on a completely different level than QR at this point. Perhaps the biggest evidence of this is that QR was Metallica's opening act on their tours for these albums (at least for the first nine months or so).
5. 1990: Both bands release follow ups that move in dramatically different areas than the previous albums that made them enormously successful. QR goes with a pop-metal approach while Metallica goes to a more basic hard rock sound. Both albums are enormously huge commercial successes. Metallica becomes arguably the biggest rock band in the world, while Empire was a massive selling record. Both bands go on world-spanning world tours that last more than a year.
The Black Album was release in August 1991, not 1990.
8. 2003: Now largely legacy acts, both release albums that do not do that well commercially but at least exhibit some new blood. QR's Tribe is the best release since their glory days and Metallica's St. Anger is clearly superior to the Load / Reload fiascos.
And now you're just expressing personal opinions.
9. 2007: both have strong rebounds by returning to their roots. Metallica goes straight to the 80's with Death Magnetic, a release widely regarded as a return to thrash form. QR mines the Operation Mindcrime catalog with OMII. I expected it to suck and degrade the legacy of the original classic but instead it's easily the band's best album in over a decade. For both bands this would be the last time they had any real contemporary appeal (meaning not relying upon their legacy catalog).
And I'm pretty sure the general consensus about O:MII is not favorable.
There are definitely some parallels. But not nearly as many as you try to sell.
Yup.
And this kind of made me laugh:sprawling, unapologetic prog-metal masterpieces.
You have a very generous definition of "prog" to put any Metallica album into that category. That isn't a knock on Metallica at all. But "prog" is just not the right description for their music, any more than calling them "folk-metal" because they covered Whiskey in a Jar.
Yeah, but the OP isn't calling Metallica "prog" or "prog-metal." Rather, he's called AJFA a "sprawling, unapologetic prog-metal" album. While I don't really agree with the hyperbole, it is quite accurate to use "prog-metal" to refer to AJFA.
Die hard fans from The '80s hating Load is so crazy to me. As somebody who was a teenager in the late 90s and early 2000s, those singles from Load and Reload are synonymous with Metallica for me, with me only the entries from The Black Album being more prevalent. To me the singles from those three albums are easily the most recognizable and commercially successful songs Metallica have written. By contrast the first four albums barely registered. So I think it might be a situation where the old guard just have to admit that times change and the band they loved changed and reached new audiences where they were just as successful, if not more successful.
Speaking for the segment of the "old guard" to whom you're referring (I was just shy of 17 when Kill 'Em All was released), as crazy as it is to you that "[d]ie hard [Metallica] fans from the '80s hat[e] Load," it's just as crazy to us that the band that did those 80s epics turned into the band that release (Re)Load. The Black Album was obviously the band's most commercially successful. There's no debating that, and that album kind of sits at the crossroads of the "old guard" and folks of your generation for whom the 90s albums were right in your wheelhouse. Of course "times change" and, obviously, Metallica changed. It's not a matter of not accepting it. It's just a matter (for some of us) of not liking the way that they changed (and that's ok).