I don't feel there are tons of similarities to I&W. I mean, yeah, you can think of Outcry's crazy instrumental section as a way of DT going back to the crazy Metropolis/ACoS style, FFH/BAI is a clear parallel to WFS/LtL, and BAI's solo section sounds like it could have fit into LitS. I can even see some calling the first heavy BitS riff as Glass Prison-ish. But I don't see a lot of the other comparisons.
As for MP's behavior, I feel that, as many people think, he's being passive-aggressive, whiny, and really needs to remember that HE left the band, and taking shots at the band isn't going to convert DT fans to his "side" that leaving DT was the right thing to do and they're horrible people to want to continue without him. Especially when reception seems pretty positive. Plus, as others have mentioned, he's the one who was into the "inspiration row" thing, the one who apparently didn't have a problem with playing on songs that sounded like Metallica/U2/Muse ripoffs, not to mention he sold BC&SL as a DT album with "PMU, ACoS, 8VM, LtL, and TGP" on it. If he doesn't have anything nice to say about the album, he should just keep his mouth shut. Now that blabbermouth's got their hands on this "story" he can complain about how he was misinterpreted and whatnot. Its just getting lame and tired. I'd like to go a month without seeing something stupid that MP said everywhere.