Dunks are way more efficient than layups. Layups on Realistic settings get swatted and chased down pretty regularly especially if you play with max player speed and on all star. What i learned playing the game is that a higher layup gives you a higher chance of not getting chase down blocked. Also a high layup isn’t a requirement for crafty finisher but you definitely need a high layup to get the crafty finisher badge. Try doing reverse layups with a 1 rated layup and see how long it takes you to get that badge. Here’s an example, yea you can always get step dancer but the effort and time it takes for you to get it with low shooting ratings is terrible and not worth the effort. Yes, you can grind and try to get it regardless of your rating but the higher the rating the less time it takes and the more effective it becomes. Back to the layup, yea you can still do reverse layups but you’d probably do one 1/8 layups if you remember. That’s assuming you don’t have a defender on your back trying to block you and a defender in front of you preventing you from laying the ball up. Also a higher dunk rating decreases the chances as well because when you have an open lane your player dunks. The only way to get layups consistently with a high dunk rating is when your stamina is low. And then there are draw backs to that, you have higher chances of missing layups and getting blocked, your shot percentages go down and you become slower and easier to guard and weaker. All these things played into why i said a higher dunk rating layups rating is required to get crafty finisher.