For what it's worth, Nero only said "run around together", not that Tobi stole him.

Seems to me he's aware of both the fact and the difference to at least some degree.

To be fair, they did take out one of their own members ( a member of a different branch, but still) in cold blood. Not a good way to earn an outsiders trust

heh, immediately calls him an asshat

I'm getting Rufus Shinra vibes from this guy.