--Phone kept ringing while I was trying to post. Had to post or lose everything.
With Resistance 2, I got probaly ten other games that same day. Too much to play at once. I'm sure it was a good/decent game but it just didn't grab me. I may seem anti-Sony at times but I'm really not. I'll heap endless praise on God of War 2, 3, and the PSP games. I love Heavy Rain and anybody that misses out on PS3 exclusive Valkyria Chronicles is really losing out. I'm not gonna blindly praise them, though. I sank a ton of hours into inFamous. It just wasn't that good. I really wanted to like Killzone 3. It was a great effort but the story didn't pull me in at all.
Even series I like like Halo, Final Fantasy, Metal Gears, etc. Don't get a free ride. If an entry sucks, I'm not gonna waste my timme on it. ODST, FF 13-2, MGS PW--if I'm not having fun, I have too many other options. "Sony made it" just isn't good enough for me.
Top tier (imo): God of War, Gran Turismo, Heavy Rain, Uncharted, LBP
Second tier (imo): MAG, inFamous, Warhawk, Killzone, Resistance
Below Average (imo): Twisted Metal, whatever I can't remember
I haven't played them all but I KNOW I play more Sony titles than your average Sony fan. The top tier is successful and deservedly so. They are amazingly made titles. The rest. Meh. In my opinion, of course.