Level 94 by industry or patience,
Master by skills,
Average 87 by playing high scores in ranked strokeplay as a Master - it is reset on tier change.
From your description of pars and birdies the suspicion arises that this player (deliberately?) doesn't show his skills in strokeplay but in MP games, which might be called sandbagging, which is rightly frowned apon but not illegal. Alas, if he won any credits against you this will "help" him up to the next tier.