I gotta said i hardly know anything about R1/2 ,i saw it in magazines ,read some information from internet.But it just not hooked me.
About COD ,i play this game since COD1.
So i gotta say i know all about COD much more than R1&2.
Then if i gotta choose only 1 FPS game ,then i'll choose COD5.
And maybe story about World war's more easily to understand than Alien invasion.
This's opinion from normal consumer.