Fahzgoolin
Banned
To be honest, while it's quite noticeable in side-by-side comparisons, I would have never in a million years noticed the differences had they not been explicitly pointed out to me. It's disappointing they weren't able to resolve the issues carried over from the PC version, but I kind of think it's one of those things that's a little overblown, but that's just me.
And as far as I'm aware, no, Halo 2 doesn't have any similar issues. If I recall correctly, Halo 2 Vista's biggest issues were that it had somewhat poor performance and that there weren't any major graphical improvements despite being a PC game released 2 and half years after the original Xbox version, neither of which are issues with H2 Classic in MCC (and in the case of the latter, is basically a feature).
Im a player that quickly obsesses over details. Details are part of the game experience for me. I don't mean to be this way, but I am. I immediately notice everything in the inferior version, so much so my experience is significantly altered negatively. So, for me its not overblown--it's ignored too much.
Halo 2 is different, but not as bad. Mainly contrasting colors and reflective surfaces look washed out on the pc version.