Henderson got overpaid because it's really difficult to find a shooting guard in this league and we thought we had one in him. That's why the market was outrageous for 2s and stretch 4s this year.
That's not the case with point guards. Kemba isn't even top 10 in that department right now and it's not like point guards are getting max deals right now.
LS didn't get poo this offseason and he was the top SG.
Kemba isn't top ten but I worry MJ thinks he is. Certainly many fans that seem to overlook his terrible decision making and shot selection think he is.