It is a sequel, just maybe not the sequel we expected.
One last thing I have to gripe about are the Big Sisters. If you don't want any big spoilers skip this to my closing statement. From all of the trailers and the hype, I was expecting the Big Sister to be that omnipresent supraenemy that you shat a bit in your pants at the first sign of her decent into the foray. But come to find, not only is she just an enemy, there's more than **** one of her. I was so disappointed I actually shed a tear. By half way through the game I was so hopped up on those abilities from the first game that made the wrench a viable option of weapon that I no longer gave a passing thought to her arrival. She died faster than some Big Daddies. This wouldn't have been such a bad thing if she wasn't hyped to high heaven for over a year. In the end her presence is just one more forgettable enemy that you kill and get shinny prizes off their corpse.
Now, in closing I opened this review saying that I did enjoy this game and I wasn't lying. The story is ok enough to keep you going the gameplay, aside from the glitches, is good. Hell after all the glitches are hammered out I would even say that the gameplay is solid. But given the first game, I was expecting more. The biggest saving grace is the main character (not you, and not the main baddy). So if you got this far and genuinely care about my opinion, it's this. The game is decent if you can get past all the flaws and disappointments and hopefully if 2k gets the idea to make a third (they will) that they should put forth a pinch more love and care into it's development.