Yes, this is a exhibition fight and clearly there is some weight issues here. But it should be an easy fight for Jake here as what others might think. But Tank is a pro, and undefeated at this weight class. So he could still poise a big problem for Jake even if he is the bigger and heavier guy here.
I think he could poise a threat but facing Jake with that huge stature shouldn't make Tank get complacent because he's more pro in terms of skills and undefeated, his weight class was not of Jake's. Well, if it comes down to this, it could be a decision type of match or if Jake can hit the blow he might knock Tank, it would be a surprise if Tank defeats Jake here with a knockout tbh.