I guess the comparisons are made because both Uncharted 2 and God of war have gorgeous graphics, just like Alan wake, the only difference is that uncharted and God of war run at 720p native, while alan wake runs only at 540p, and this for an exclusive game which should be built around the strength of the 360.
Putting things into a little perspective
Uncharted 2: 720p rendering rez, x2 AA
God of war 3: 720 rendering rez, MLAA (equivalent to x4 AA if not higher)
Killzone 2: 720p rendering rez, x2QAA
Alan wake: 540p rendering rez, x4AA
Now I'm not taking anything away from Alan wake cuz from what I've seen it does look nice from the vids I've seen, but I'm puzzled why remedy couldn't do 720p native rendering rez on the 360.
I mean for the longest time people kept saying that the 360 had the better GPU, so if PS3 can render 720p games with at least x2AA, then the 360 should have no issues, an yet the game is only rendered at 540p, so what gives?
I reckon It could be 3 things:-
1- EDram is the limiting factor as it can't store the frame buffer with all the effects they want to do, and they don't want to tile because of the performance hit they'll incur
2- The engine along with the game was designed around being open world, but the developers had issues cramming it into the 360, so they made conscious decisions to make the game work on 360, such as decreasing resolution and making it more linear, but on the upside the made the frame rate solid and removed almost all jaggies
3- The game is actually multiplatform along with the engine, Microsoft just paid for 1 year exclusivity to keep it going to the PS3.
I more incline to say it could be the 3rd option, I say this because it's happened in the past with other games, and with things the way they are this gen, it honestly wouldn't surprise me.
my 2 cents.