I haven't played Graw 2 but Gears is much cinematic and quick gamplay. Gears online is really weak, for me atleast, i can hardly ever find a match. Gears also is 10times less realistic and the gameplay is a lot easier to learn than Graw.

bottom line is that Graw 2 seems like it is a lot better online than both the 1st Graw and Gears.

Gears single player is way better than Graw 1's in my opinion.