"Did not!"
"Did so!"
...
Etc., etc.
Honestly, neither of these guys need us feeding their egos. They've contributed some decent infrastructure for web hacking, but if they want to have a he-said/she-said argument, that's their business. I personally don't want to waste any more time on their little ego-fest.
Let's turn this into a thread about Passenger, instead, since both of them seem to be blessing it as the next great thing for Rails deployment. Personally, I've been nervous about using it in production, mainly because I don't yet trust that it isn't going to interact poorly with my rewrite rules and authN/Z setup. Apache configurations can feel a bit like voodoo even when modules aren't stomping all over each other, and the interaction of Passenger with mod_rewrite, in particular, seems like it could cause breakage.
That being said, once you get the thing packaged and installed (which wasn't as easy under Debian as I'd like), it does save a lot of resources compared to a Mongrel-based deployment. I've seen a drastic reduction in RAM usage, as well as a major decrease in the number of idle database connections lying around in inactive Mongrel backends.