Manoah had an elite statistical profile in college. Arguably the top D1 player based on stats alone. He missed bats, had good control, and a good batted ball profile. He was also able to get opposite handed hitters out even without much of a changeup.
Law's concerns RE: SWR are based partially on mechanics. But, SWR is also a control + strikeout guy without an amazing batted ball profile. The one blemish on his MiLB stats is a tendency to give up line drives. Perhaps he is filling up the zone with non-elite stuff?
The number of pitches someone has can be focused on too much. Give me a guy with a 70/60/45 arsenal over a guy with a 55/55/50/50 bag, or whatever.
Just playing Keith's advocate, here.