If current makeup is above 85 and each player is less than 3 years pro, they will have a better shot, but make up isn't the end all. If a guy has 99 makeup, but he is a pitcher with 15 control, 12 L split, and 13 R split, he will probably still only be a AA or AAA player. Current makeup determines the initial bump. I would not pay too much attention to projected makeup unless you are drafting him with a lower ( as in higher overall numerical inexpensive) draft pick or signing him in INTL with a minimum bonus.
I would much rather have a player that has projected splits, contact, control, eye in the low 60s with low 60s makeup than have a guy with projected splits, control, contact, eye in the 40s with higher makeup. It's just that high makeup guys are usually found low in the draft, on the free agent list, tryout camp. It is easy to fill approximately 30 minor league roster spots with high makeup guys than it is to wheel and deal for a guy that already has borderline mlb projected ratings with the hopes that he turns into an allstar pitcher, COF, 1b, or C by getting ditr.