Yeah...forgot about that...and Bb was not Sylar since he can't be killed until the night after his first successful kill, so he was definitely a Hero...CP could be Linderman, Candice, or the Haitian, but Linderman was saving one of them...so we're very probably looking at two Hero deaths...
Out of the Heros, as mentioned, Claire and Ted couldn't be killed. Claire probably wasn't saving anyone last night since she can only save once every other night. Nathan was saving someone, probably himself (that's what I would do on Night 1). Since (thankfully) Niki didn't act, DL was saving someone, probably himself or Niki...
I think that if he were Nathan, Bb would have saved himself, so that narrows it down further...hmm...