Hell, all Nova Prime has to do is hold his own for a few moments, which he can obviously do, and Rulk should burn himself out like he did against the Hulk.
Rulk killed Wendigo's is impressive to a certain extent seeing as how they're are many different Wendigo's and they vary from what I read.
She-Hulk is impressive to a point and so is Iron Man.
The Thor thing was only a ploy, as Thor can control his hammer indefinitely, and only allowed the Rulk to keep on hitting Thor with his hammer, so that he can judge his strength, that's why Thor wasn't even fighting back. Hence why he came back, it took only moments into the combat and Thor was about to kill him.
Hey, I know lol but it's either that or calling it PIS. At least there is an excuse for Thor, Hulk can't trigger his healing factor on and off, so him being beaten by a choke hold and a broke arm is PIS and nothing else.
I don't know how there is any possible way Nova can lose.
With the World Mind, etc. he would already know that all he has to do is hold his own and Rulk will burn himself out.
Rulk is in no way going to dispose of Nova in moments so as seeing what punishment he can take, and keep on coming..
Throw in the fact, that he can be stabbed, cut, etc. by beings such as Hell Cat, and shot and harmed by bullets etc. from someone like Black Widow (Apparently though, if Thor hits him point black in the face, with his hammer, or Hulk punches him in the face, he doesn't even flinch. **** you Loeb and you're stupid illogical writing), and Nova can probably tear right through him with his durability now, apparently.
Playing possum is one thing but from what I know, Rulk can't regulate his durability, etc.
Either way, Nova wins.
I would give Nova Prime, the win over WWH, and I would give him the win over Rulk as well.