I think it's just an honest mistake... but seems to me that it's not inaccurate if you count it as a series. I suppose it's like saying:
Michiru Yamane (Castlevania)
even though she didn't do THE Castlevania (NES) game, but rather many games in the series.
It's also my mistake for being technically correct (The best kind of correct) with Kinuyo Yamashita, yet being more abstract with Tallarico. His tunes aren't bad, though. You're right that I don't know the first game's music as much though. Then again, I don't see Miller working on anything else at allllllllllllllll, or am I wrong? While Tallarico told me he's going to be incorporating Earthworm Jim into Video Games Live! at some point. I imagine he didn't wanna do that right from the get-go in order to not come off pretentious. The "Afrika" (PS3 Animal Photography game from Japan) music composer was there too (Resident Evil 5's Wataru Hokoyama).