Justins wrestling may be great, we really have no idea since he never uses it. I don't think it's even close to on the same level as khabibs. I dont think he trains wrestling like he probably did when he was actually doing it. I don't see him stopping the td, and we know what happens when khabib gets his opponent on the ground. Justins tank is kinda suspect as well, and it ould be way worse using all the energy he would have to in order to defend against khabibs takedowns. I would love Justin vs conor, would be a great fight for fans. I honestly don't thiink anyone at 55 can beat khabib except khabib. As long as he stays focused and uses his best skills instead of testing his striking too much, he's a hard guy to crack. Justin has NCAA wrestling, which khabib trains with guys all the time that are better than Justin at and are bigger than Justin. Short of some flying knee miricle, khabib wins this fight the same way he wins all his fights. Justin gasses after 2 and succumbs in the 3rd.
This has come to mind for me too (the training side of it) however is it not something you would like to see? I'm sure if a fight was booked Gaethje would be back into that and it's like anything, he doesn;t lose the skill or natural skill he had he just doesn't use it. I guess it's debatable if as fans we'd like to see it more as personally I love the way Gaethje fights right now but if he was to fight Khabib, he'd have to use this side of him, he wouldn't have a choice. The TD defence I personally do see him stopping, or causing problems at least.
I don't think Khabib wouldn't get him down, I just don't think it would be as easy and this is where Khabib wins fights. Once he's got his opponent down that's pretty much it, it's not long until they're looking tired and fatigued and it's pretty much a guarantee that at some point in the fight (usually early on) he's going to get these fighters down and it's not long until they start looking fatigued.
Gaethje is just an example (although a good one I feel) but in regards to this, it's something I feel Khabib needs testing with a little more as opposed to the opponents he's had, he's never booked these kind of fights.