<<How did you figure out Comstock was an alternate Booker?>>
There were too many parallels (get it?) being drawn between them. I think Comstock even says towards the middle of the game that they're reflections of each other or something like that. I was thinking that Comstock was the older/future version of Booker, but it never occurred to me that he had a deeper connection to Elizabeth, which is obvious in retrospect!
<<It would have been both actually. Booker only becomes Comstock in some universes after he goes to Wounded Knee. So Slate complaining about Comstock not being at Wounded Knee is kinda funny in hindsight.>>
Oooooooooooh! So Slate remembers Booker being there but not Comstock because at that point they were both Booker! That makes sense now.
Here's another thing I got confused about. The storyline with Daisy and the Vox Populai. They go into an alt-world where Booker died fighting for the Vox to get guns for the main-world Vox. But then Daisy decides to kill him because he works better as a martyr? That was main-world Daisy right? I started getting confused as to which world was which at that point...
I don't usually replay games but I'm seriously tempted to play this game again, knowing the ending. Also I wouldn't have to run around looking for voxophones I could just focus on the shooting, and finish the game in a third of the time lol