You are clinging into ancient player designations, that have no place in todays NBA. Even NBA removed those designations and only kept the "Guard, Forward and Center" terms... and even those are used very fluidly (lots of players with "Guard-Forward" or "Center-Forward" designations).
What matters and why those numbers I posted matter is that Sexton plays better within Hardys system than JC. Jordan is a better scorer albeit much less efficient this year at least (maybe also a testament to him taking lower percentage chances). Neither one has Conley's arsenal of passes but Sexton is clearly learning from Conley so I wouldn't be surprised if he kept adding new nuances into his game.