Why don’t you compare minutes played and see what you get. None of the four you mentioned for Purdue averaged anywhere near 20 minutes or more.
Haarms 17mpg 4.8ppg
Cline 17mpg 4.0ppg
Eastern 12.6mpg 2.9ppg
Eifert 8.3mpg 1.6ppg
Durham 18.8mpg 6.5ppg
McRoberts 21.9mph 2.8ppg
Smith 14.5mpg 6.5ppg
Davis 18.8mpg 9.6ppg
Seems Durham is a little better than Haarms, McBob, well...Smith doubles Eastern with a little more time and Davis, who is iffy to play much until January is your best returning player not named Juwan.
That shows a difference, yet not much and when you consider the Purdue guys played on a 30 win team and weren’t relied on to score vs the IU guys playing on a .500 that lack scoring, I am not sure there’s much of an argument to say IU will be any better at offense than Purdue. I know they won’t be as good defensively and we all know which team has the best player.
There is nothing in last years performance that points to IU doing anything special this year. You got one really good recruit and lost 3 of your top five scorers, 4 if you count Davis. That doesn’t scream offensively talented team