I was contemplating this when I wrote my post. If there was any division it would be the LHW division for sure. Dana has done an absolute garbage job scouting for this division. The narrative of the "resurgence of Glover" is such a joke. It's almost a test of how gullible UFC fans can be. Glover has not actually resurged, he's simply beating fighters that weren't particularly good to begin with in a division that hasn't been particularly good for a while because all the fighters who have beat him or could beat him were shooed out of the division. Cory went to Bellator, Rumble went to Bellator, Phil Davis went to Bellator, Jones went/is going to HW, and all of them are younger than Glover. All of them beat Glover, and all of them were shooed out of the division and now Glover is the only one left so he's the best by default. I'm not against the idea that fighters can improve over time but you're trying to convince me that Glover improved between 38 and 41 you just don't believe in biology.
At the top of the divisions, say top 4, I think the only argument for the UFC is that it's kinda implicitly understood, or hell maybe even just wished for by people like myself, that Glover is worse than Jan, Jiri, Rakic and Ankalaev. That he will lose those fights and fall off soon and his true colors will show. If he manages to beat them then...I mean no question bellator's division is better...But can we presume they will be better? Maybe not even, so Bellator may have the edge in 1-4.
In that 5-10 range I think the UFC definitely has the edge. The UFC has a lot of depth guys like Reyes, Smith, Santos, Oezdemir, Krylov, Walker, Spann, guys who I think are demonstrably going nowhere but are also extremely good fighters, I think indisputably better than a 43 year old Machida, 45 year old Manhoef, and also raw and inexperienced guys like Grant Neal or Christian Edwards. So the UFC definitely has the edge out from 15, maybe even to 15.
But honestly the most depressing thing is that there is really no one coming up the pipe in the UFC. I think Dana was putting his hopes in Jamahal Hill, Kennedy Nzechukwu, Jimmy Crute. But I don't know, did anyone think that they were elite prospects? They don't have strong bases. They're little bit of everything fighters. Which is what Dana wants but in my opinion it's just a recipe for building more Ryan Spanns and Anthony Smiths. Bellator knows what it wants with its fighters, it targets demographics and develops its fighters. So where it's hard to point to who is coming up in the pipe for the UFC, for bellator it's a bit easier.