I think there are more 5e games than there are 3.x ones, but that's a natural byproduct of 5e being newish and the most current incarnation of the rules. [MENTION=913]Schmoe[/MENTION] is correct in that Living Pathfinder is a good place to find Pathfinder games. Many of the same DMs that are starting games in Talking the Talk are also over on LPF, and LPF games run in Playing the Game just the same as any other PbP. Speaking only for myself, I'm no longer running 3.x or Pathfinder as a conscious decision because I like 5e's streamlined old-school feel. I'm gravitating toward moving all my gaming to 5e; I do a better job DMing when I don't have to switch between multiple rulesets.
I get wanting a 3.x or PF game, though. Hope you find one. They're here, if you keep your eyes peeled. And with some very good-quality DMs, too.