I don't know that 2008 was the year of the 360.
the ps3 had these game review scores at IGN.
GTA IV 10
Little Big Planet 95
Resistance 2 95
Valkyrie Chronicles 91
and the 360 had these
GTA IV 10
Fallout 3 96
Gears 2 95
Bionic Commando Rearmed 94
Castle Crashers 90
Left 4 Dead 90
Fable II 88
Ninja Gaiden 87
Tales of Vesperia 82
Lost Odyssey 80
Banjo Kazooie Nuts and Bolts 80
Even though there is more quantity on the 360 side, I don't think that the quality is there to trump two tens, two 95s, and (strategy) jrpg of the year on PS3.
Now this seems a bit of a strange post. You use reviews to judge a lineup? Most reviewers nowadays are crap. But also tend to lean towards hyped games. If your into reviews try metacriticing them. Also Fallout 3 was on PS3 as well.
But regardless, people say 2008 was the year of PS3. I dont know. Yes it had MGS4.
But many many people would choose the 360 exclusive list over the PS3 one.
Tales Of Vesperia, Lost Odyssey and Ninja Gaiden 2 are 3 game experiences you just cant get on the PS3 right this minute. (although we do have late ports coming). Also Left4Dead, Fable 2 and Gears 2 are AAA top games. And even BK N&B was a good game. 2008 saw 360 have great games exclusive across a variety of genres. In terms of quality with variety 360 wins hands down in 08.
Ask yourself this. Which big hitters did M$ release in 08 that was an FPS????