User blog comment:Demons of Hræsvelgr/Which would you fly?/@comment-4436775-20130503040815

I've rather thought that the rivalry was between the PAK FA and the Raptor. I'd say this one is kind of even (American brute force vs. Russian brute force), but the Raptor wins because of avionics and usage (Su-37 doesn'thave much flight experience yet.)