Gow 3 is f***ing amazing! However, if you didn't like the other gows, you won't like 3 as the gameplay is the same. Plus you'll be lost in the story if you just jump into 3 without playing 1/2. Gow is one of the best franchises ever though. I just completed all 5 gow games from gow saga recently and they were all amazing. Each one was great and fun to play for the first time even in the year 2014.
GOW3 is good but GOW2 man its the best of the lot. I'd love to see the game redone with 3's looks. Ascension was not so great but still fun the 2nd PSP game to my shock was f***ing great. think that one and GOW2 are the best ones.