nice!
alright, you said this was a tribute to canabalt so let's compare.
music - advantage canabalt. I really didn't enjoy this tune very much. Sure it was fun and energetic, but it didn't keep it's flair for long.
graphics - advantage canabalt. Sorry to say it, but I feel that canabalt had far more stylish graphics, and it helped to create far more atmosphere in the game.
gameplay - advantage ticketless. I think you did a nice job adding a bit of variety between obstacles, putting a little more thrill in the game.
highscores - advantage ticketless. Facebook. that's the biggest thing you've done right for this game, and the inability to post scores on facebook was my biggest problem with canabalt.
difficulty - advantage ticketless. It's a no brainer.
All in all, I have to say that your game would win against canabalt in my mind, however it seems like this is a it less similar to canabalt, and closer to an old flash game by the name of arcane castle.