I think Lombard came to the UFC about 10 years too late. It's easy to get stagnant when you're running through everybody without much effort. To be fair, Bellator's roster is much better now than it was before Bjork got the boot, but it's still not anywhere near the UFC's level.
My point is that Lombard had a lot of potential in his prime and squandered it. He's 40 now, and not everyone is Dan Henderson or Randy Couture. Those types of guys are an anomaly, and most shouldn't be fighting beyond 37ish.
Let's also not forget that Leites has been in the UFC for a very long time fighting killers. He's not a bitch by any means.