-They are both bears. Yes Panda are apparently bears. http://en.wikipedia.org/wiki/Panda#C..._and_evolution
-Furthermore Pandaria is a land filled with many species related to existing sapient species that either deviated over time such as the Yangol or evolved through the power of the Vale such as the Jinyu.
-But they're are no Furbolg on Pandaria. On the other hand there are no Trogg either and they're apparently related to the Grummel (wrap your head around that one).
-They have nothing in common other than being bears. I can't think of a thing. Can you?
-They could also be related to Pandas. They're are at least two Panda cubs in game. Meng Meng and Luo Luo present at the Alliance and Horde Pandaren camps in their respective capitals.
Also just for trivia the generic Pandaren in W3 were Furbolgs painted panda-style.
I'm out of stuff for the moment. Anybody got something to add?
Comments? Questions? Anything? Anybody?