It's hw so anything can happen disclaimer, but volkov is awful at keeping distance. I watched his penultimate fight and the guy rushed him in r1 to get the clinch and you could see it a mile off but he still couldn't avoid it and ended up clinched against the ropes. He has really poor cage/ring awareness and no ability to fight out of the clinch, defend takedowns or get up from the bottom. Weighing more if anything is going to slow him down and make him even less likely to be able to avoid the clinch. More weight does not make up for piss poor td defence or change the fact he has long gangly legs to grab hold of.