Okay, let's take Still Life as our example, since it's the one I'm most familiar with. The album starts off great with The Moor, which I really dig. But the rest of the album is just...boring. I dunno, I can't describe it. Maybe I'll do a song-by-song to organize myself.
Godhead's Lament is muddy and bland.
Benighted is a nice ballad, probably #2 on the album. Short n' sweet.
Moonlapse Vertigo is muddy and bland, again.
Face of Melinda is supposed to be a fan favorite, but I don't see what's so great about it. Sure, it's nice, but nothing compared to songs like Coil, Hours of Wealth, and Isolation Years.
Serenity Painted Death - Again, another boring song.
White Cluster - Boring, again.
I'm sorry, but Still Life is just a boring album, where Ghost Reveries is very emotional, very fear-inducing, very...moving. Hard to describe. The only "eh" songs (and they are only "eh" by comparison with the others on the album) are Baying of the Hounds and Beneath the Mire. Everything else is flawless as far as I can tell.