Yupp Gus and Jones IMO are a step above the rest of the competition. As far as Gus is concerned I don't see anybody beating him after what we saw from him in the Jones fight.
Going in it was thought that Jones is one of the best wrestlers in MMA from an offensive and defensive stand point and Gus stuffed 90% of Jones takedowns(first time this has been done) and also became the first man to take down Jones. You can goes as far as saying Gus won the wrestling aspect of this fight. So if Jones has trouble with Gus in wrestling, do you think that Rashad, Davis, Glover or Bader would give him many fits in the wrestling department and plus he was able to pop right back up from the one takedown Jones got in the fight.
Even though he's primarily known as a striker, there is still alot he can improve on in the striking department such as defense and putting all of his tools together. That being said he still hit Jones more in one fight than he's been hit in his entire career up to that point and the problems Jones gave with Gus striking wise was his use of the fancy stuff such as weird high kicks and elbows, something a lot of the LHWs don't have. Mousasi is more technical oriented, Glover's too slow, same with Lil Nog, Dan's too one dimensional, Rashad really only uses his punches these days and the rest are just flat out brawlers, most of which he's already beaten.
So yeah as of now I don't see any stylistic nightmares for Gus.