Curry still got room to grow but AD has scary potential. He like a young Hakeem Olajuwon.
True, but one thing about potential is it's up in the air. It may never materialize. Even though we're pretty sure we know AD is going to evolve, we don't know how great he will be because he hasn't done it yet. There's a possibility his post game doesn't improve significantly, doesn't expand his range, nor improves his offense much more than it is, etc. Now chances are he'll improve. However, the question is by how much? It's as uncertain that'll he'll improve by leaps and bounds as it is that it may be only marginal.
With Curry he's already the best shooter in history with an elite handle and passing ability. There's no growth needed at this point. There's little wear on his body and has lead a team to the Finals who'll most likely win the whole thing. Curry is already at an atg talent level at this point. The skills are all there already, all he has to do is maintain it. I predict he'll grow, but even if it's just marginally that'll be

.
That's pretty much my reasoning. Because while Curry's main issue is whether he can sustain it, Davis has to reach his potential first and then also sustain it. As much as AD has a very high ceiling at this point, there are more question marks as well.
Lately I've just been more about practicality and action proving history rather than theory and potential. Like in another thread that asked how great could Grant Hill have been if he had not got injured. No matter what his skills and potential were when you compare him to the atgs, the fact is those others did reach the skill level that they did and used their talent to attain their achievements. Grant Hill simply did not and that's why he's not an atg.