I think they both genuinely care about making the world a better place and helping humanity, and that will be their saving grace. I agree they both like a pat on the back from comrades, but I doubt any of us dislike that. I don't see them turning on each other in a permanent way. I think they'll have their clashes, but working together will benefit both tremendously and they both know that. I don't think they'll let ego wreck what they can do together.