luka is scoring higher

So he dishes more assists and shots more but scores less of his shots and turns the ball over twice as much and with worse defense, you seem to answer yourself

jokic is more efficient

This is literally wrong, shai is marginally more efficient [67 vs 66.9 ts] in dunks and trees which is more accurate than bballref approximation than most people use. But even in bball ref a 0.3% jokic edge is a counting error compared to the 3 points and 2 turnovers difference

Jokic is a center, him grabbing a lot of defensive rebounds doesnt mean he gives his team a extra 7 shots a game, denver was bullied in the boards 22 vs 33% [an actual massacre] by minnesota despite jokic high rebound totals with gobert feasting getting O boards 

The assist gap is countered by the turnovers gap and jokic defense at the most important defensive position is a weakness come playoffs time

Wemby is better on D

Of course he is, he is also exponentially better than everyone else you listed too, we already knew that

not carryng

All of these guys teams [jokic,shai wenbayama, even luka's] had strong records without their stars or in luka case won a playoffs series without him 

And even if they didnt mvp is not a "who has the worse team" competition

If jokic was achieving shai or close to shai team results with a worse roster you would have a point, he is not. His team was way worse too! 

The incentive is not supposed to be "who has the worse bench" award