Yeah, I posted about it in another thread (I think maybe the Steam thread, or maybe the Xbox 360 for the game), but I agree, it was overrated. The gameplay itself (ie, the shooting) just ended up being something that I actively dreaded by the end.
The whole game consisted of using one vigor on one type of enemy, and another on the other type, and following that up with lots of shooting until the effects wore off, and then repeating. The much-touted skylines were only present maybe 5 times through the entire game, and while the 'roller-coaster' feeling on them was done excellently, the gunplay on there even felt off.
Even the story, I thought that was a little overrated as well. It improved towards the end, but I thought praise for it was completely overblown. The ending was interesting and new for a game, but it's not like other media hasn't explored very similar concepts, even very recently.
I enjoyed it, but I would only give it about an 8 or 8.5 out of 10. Still, for this weekend's discounted price, it should have been a no-brainer for anyone who doesn't own it yet.
(In contrast though, I finally got around to playing HL2: Episode Two for the first time this weekend, and it was just shocking how much more compelling the gunplay felt there... even without any vigor type effects. And of course that's not the only example of a FPS that feels more interesting than Bioshock Infinite. I'm not sure what felt so dull in Bioshock Infinite's shooting, but they did something wrong there.)