Not a terrible comparison.
The glaring difference to me is that Turner has always had the death knell combination for an NBA wing of not just being a poor shooter, but also an unwilling shooter from distance. Being a non-shooter is worse than being a poor shooter IMO.
You simply can’t be a good NBA player on the wing as a non-shooter unless you’re top of the league good at something else, usually defense.
I said this a couple of weeks ago, but Evan Turner with a willingness to take 4-5 threes a night and hit them at 35% DRAMATICALLY changes his overall ceiling as a player. He's not that bad of a defender, rebounder or passer. If Culver could become Turner with a willingness to shoot and ability to be a middle of the pack shooter, that wouldn't be the worst thing in the world.