I weigh about 185lbs and have been doing Martial arts since I was a 5 yr old kid (Judo, Boxing, Tae Kwon Do etc ). I also now fight in mma compititions.
I have fought guys that are 220 and up and punched the shit out of them. I have also had the shit punched out of me by guys at 150lbs and under (in training). And vice versa aswell.
Weigh is an advantage but it wont win you the fight.
How long until titus gasses? Not long.