Ok, voting hasn't broken yet so that is way cool!
I just got the commenting and voting done and was able to do a bunch of successful tests on. It should correctly update the comment, main vote rating (both of them), vote count and comment count. I took out the editing crap on the update but if you need to mess with it, just refresh the page and all the comment details will be there. I didn't feel the complication of doing that portion was necessary for what it is.
I like it!