Reggie Johnson was physically a bigger person. Not in terms of height. He carried weight easier. Moved all the way to 175 won a title there and competed with the best. He had a thicker body type. Julian, who is one of my all-time favorites, was on the smallish side 'physically' even when he was a middleweight. Thin waist. Had a difficult time putting on weight. Never really even competed at super middle, let alone light heavy. He probably could've made welter if he had to. But he was a natural junior middle/middleweight. Johnson probably outpoints him. But I'd be rooting for Jackson the whole way.
I agree with this, Johnson also had a really good chin too. Jackson is a little bit out of his depth here.