Yesod was already in round two which happened the next day:
I was excited to see if Warp or Snap was included, but I was sad to see they weren't. If I find time someday, I'll add benchmarks for them, but it will be a long time. If anyone else wants to take a stab at it, that'd be awesome!Jeff
http://www.techempower.com/blog/2013/03/28/framework- benchmarks/