Manas is a hard one to handicap. His runout skills and pattern recognition are super-elite and give him a chance to runover pretty much anybody, but his tactical game is under-developed and he makes some poor choices from time to time. In offense-oriented matches, he's far more dangerous than he is when he has to grind.
I'm not yet willing to call him a complete player, but if his development and decision making can catch up to his world class skills, he'll likely be a top ten player in the world at some point.
He is, in rough terms, the male Chezka Centeno, who often manages to overcome some of her tactical limitations with mind-blowing offensive execution, but covering up for tactical limitations is a lot harder in men's pool than women's pool, and if he hopes to reach the highest level, he'll have to add some of the missing pieces.
He may never play defense like a Reyes, Pagulayan, Orcullo, or Biado. That said, were he to reach Lee Van Corteza's level in beating players to the shot, his prospects will be very bright.
One thing is for sure, though. He is entertaining to watch.