I'm actually a Mousasi fan but I was very scared when he fought Jacare the first time. I was relieved he walked out of there with a win the way he did because it was about to get pretty bad for him on the ground that night.
I don't think any level of performance erases that loss or proves it a fluke. He got caught by a crafty fighter and KO'ed. I think the question should be, "has his standup improved to the point where he can utilize it against the more crafty fighters of the division?" and I'd say yes as long as his confidence matches his skills.
Do you think Souza has improved enough to prove his first up-kick KO loss to Mousasi a fluke?
You say shark I say hey man, Jaws was never my scene and I don't like Star Wars