Russell Westbrook's problem is inconsistency.
Kyrie Irving's problem is his pride and arrogance.
Who do you think will be a big help in the long run? Who do you think can be changed?
When Kyrie Irving goes crazy again, he is willing to give up more games just because he doesn't want to play, simple as that. He didn't realize that every of his absence is a big loss for the Nets as he's one of the key players there. Even the management and coach can't even make Irving soft once he rants on something. Irving is also willing not to get paid for his missed games. That's how unreachable his pride is.
About Russell Westbrook, his inconsistency still has a chance to be changed. He's not a ball hogger anymore and that proves when he played on Washington Wizards and Los Angeles Lakers. It's just that his usual playing form was not the same anymore during his prime. But he is trying to get back on his usual. He is also not injury-prone and always present in their game. Still a good part of the roster or even for a bench.
But my comparison is not really a big deal since, in the first place, I doubt an Irving-Westbrook exchange will happen between the Lakers and Nets.