He had 3 rounds to fight, and fought accordingly. With an injured hand (vs Usman).Khamzat totally fades later in the fight and was lucky there was no championship rounds in those two fights. Usman came within a hair of winning that fight and threatened Khamzat more the later the fight went. Burns was a smaller guy, and fighting like he did in the third round will get him smashed against DDP.
There is a near zero chance Khamzat will win this fight by decision if he fights like he usually fights in the early rounds; it's finish the fight or get tooled in rounds 4 and 5 in that case. His ability to take DDP down will wane as the fight goes on- it always has in his fights that went the distance, and he's never had to survive for 5 rounds.
Burns was smaller, but so was Khamzat, given that it was at 170.
He was also the one guy at WW Khamzat didn't want to go to the ground with, yet he still took him down at will, once after getting knocked down by a clean overhand.
He didn't get tooled, he's been competitive later on in every fight, and most importantly still able to get takedowns. Dricus has lost competitive rounds to easier matchups than Khamzat, past round 1.
Khanzat has to survive 5 rounds, but so does Dricus, and it's safe to say that this is a very different threat than his last 5 round fights, and this fight will involve more wrestling/grappling, and he likely won't be the one who's deciding where the fight goes.
Dricus will also look tired later on, just as he did vs Izzy, and as Burns and Usman did vs Khamzat.
For some reason a lot of people seem unwilling to accept that someone can still be effective while being tired.
I've seen both of them look exhausted yet keep fighting effectively.
I agree that Khamzat won't keep the same insane wrestling/grappling pace in the later rounds, but he will likely have enough energy to shoot successfully and control Dricus for parts of those rounds as well.
In those situations I do worry about Dricus finding a finish from out of nowhere, given that he is dangerous all 5 rounds, but I don't see why Khamzat would be helpless later on.