I don't understand how Conviction is the poor man's (or the crapper version) of MGS4:
1) Both are established series and no one seemed to be complaining for the last 5 or 6 SC games when they were multiplatform
2) Conviction is set in a realistic world, MGS4 is set in a fantasy world (large robotic machines, genetically enhanced humans, cyborg's, liquid snakes... not literally :) )
3) MGS is about Infiltration, Conviction is about Evasion
4) SC has always sported completely real weapons (otherwise it wouldn't be a clancy game) MGS has bent the laws of physics and reality on a number of occassions.
5) Is it because Fisher looks like a hobo now?
Still, I wouldn't care if it went multiplatform, no loss felt here.