I assume no, but for the modern warfare run can COD 4 be swapped out for remastered?

3 years late reply :), but no, the games are more different than you might think

So, when Remastered marathon? (Or we're waiting for MW3 Rem?)

I have MW2 remastered only, but og of 1 & 3; is the remastered of 2 a different game like you said for MW1?

mw2r is in fact a much different game and can't be used for mwt runs. even if you could it's not advisable because both remasters are slower runs than their OG counterparts.