I am not sure if Gustaffson will be able to take Mousasi down, but he will sur ebe able to put his back agains't the cage and control him from there being the bigger guy. This is what concerns me in this fight and the fact that Mousasi's cardio is questionnable.
This being a 5 rounds fight, and agains't a much bigger guy in Gus, Mouasi could have cardio issues.