My understanding is they had a guy who sort of re-imagined them, while keeping them true to their original sound. But made the songs blend together better.
Omar - "what are you guys doing? Why did you get rid of crash!"
Game devs - "we wanted to put in evil Cole so we had to get rid of everyone else the fans wanted"
Omar- "Oh nice, good idea. I didn't think of that"
I can barley hear the music from the gameplay videos and i wasnt in the beta. Though to my understanding Stowaway is the outright Uncharted theme as its heard in UC3 rather than a remix, which -assuming is the case for all of the songs- is quite different from Smash Bros which has remixes and rearrangements as the 'main' themes for each stage.
We don't know what the Bioshock Infinite theme is
As long as the original version of this song or a remix of it is in I would be totally happy with the soundtrack
Also hoping for the Metal Gear Solid theme
ABE and CHIMERA FOR PSASBR