@Mrs. P
While Jason doesn't underrotate all his jumps, the fact that he underrotates any is a problem. Pretty much all the top men do not underrotate triple axels; the only time they underrotate anything is on the second jump of a combination, if the landing of the first jump is bad and they can only eek out the second. Coupled with Jason's lack of a quad, 3A troubles, and low jumps in general (again, by the standards of the men's field)... it just gives off an impression of "weak jumper."
Though yes, we shouldn't hype Josh as a jumping machine either--he has a quad but hasn't landed it well, and his 3-3s and triples aren't incredibly high or impressive. He does have one of the best 3As in the business though, which gives a good impression about his jumping as a whole.
Not saying I disagree with you on anything... just pointing out the "weak jumper" label would be stuck on any male skater with Jason's problems, fair or not. That doesn't make the rest of his skating bad, of course--not for me, at least.
Also, I'd rather watch Max run around the rink all day than Ross Miner (whose performances I forget the moment they're over), but what do I know...