I think it is pretty even with Stockton's assists making up for Curry's points. The difference is longevity. So if Curry can keep it up for another 10 years maybe he is in the conversation.
Stockton's best year
1989–90 Utah FG .514 3Pt .416 FT .819 RB 2.6 Ast 14.5 Stl 2.7 ppg 17.2
Curry's best year
2015–16 Golden State FG .504 3pt .454 Ft .90 Rb 5.4 Ast 6.7 Stl 2.1 ppg 30.1