Well ubi i have not seen any gameplay footage on the ps3 as yet alot of people want too see it so were is it. Not trailers actuall gp footage like whats been seen on the 360
Most games are created on the 360 first and then ported to the ps3. I dont know why but thats how it is. Iv tested games from EA and they were all tested on the 360
Here is the thing, there is no thing is a bad game on PS3, if you played Metal Gear Solid 4, God of War 3, Uncharted 3, inFamous 2, Resistance 3, Journey, or technically any PS3 Exclusive game, you would realize that the PS3 is on top of it's game (same goes for X360).
The thing is Ubi is doing bad ports, or was doing so, Splinter Cell ports can't be compared to their Xbox originals, cause Ubi ported them badly instead of developing them for PS, that's why SC sales on the PS is weak, even though the Metal Gear Solid sells strong, meaning the stealth genre is very much alive on the PS.
Now regarding why the PS3 is harder to develop, I am not really sure about this, but I think the RAMs available for processing or something is lower than X360, so developers need to spend more time on PS3 to get things right, while X360 is easier cause it have more RAMs, or something, it is along those lines though I am not sure, think Bayonetta all the reviews said it sucked on the PS3 (but I enjoyed it), that way because it was a port, and not developed for the PS3, some developers really spend time working hard like RockSteady Batman Arkham City which looks amazing on PS3, while others just flip like Bethesda Skyrim and all it's problems on the PS3.
As for GRFS we wouldn't be able to judge without a copy in our hands, but I hope that Ubi isn't porting the game, but developing it for PS3 and X360 simultaneously
The PS3 has a very different architecture (in terms of hardware) then traditional PCs. XBOX is more inline with what a desktop PC and Wii looks like. The difference in hardware & software APIs provided by Sony to the game developers means that program code is far less portable between the systems. It makes the process difficult, more expensive, more bug prone, subject to performance issues, and more you name it. It was a poor decision by Sony in the first place and gamers are suffering for it now. Its not that their hardware is bad, its just too different to make targeting it easy when you are also targeting the other platforms. If you look at the recent PS4 rumors, they all indicate that Sony is fixing this with the next generation.
Honestly I could care less about blocking used games, because I hope they move to a 100% digital format. The days of going to the store and buy a box are over. I've had enough of scratched disks, and all the other issues that come with physical media. The Steam store on PC is a way better experience. Being able to pre-order a game, and even download the files before the launch date is awesome! Digital distribution kills the sell back industry, but gamers get a way better experience.
DRM is evil no matter how you look at it. I'm completely against piracy, I actually want to pay for and support a good game / company, but DRM only hurts the legitimate customers.