Maybe it would help if you figure out that WS is a ulative stat, like scoring total.
David Robinson is #4, CP3 #6, Pe #7, Durant #8, Neil Jonston #9, Barkley #10. Jabbar is only #11, Wade is ranked higher than Duncan, Westbrook over Hakeem, Yao Ming is #22 for Pete's sake over Kobe and Dirk, Blake is over Garnett, inconsistencies are all over the place.
If you want to compare careers through WS, you actually look at the top WS seasons of a player as WS is used to compare individual seasons, and even then, you have to take things into perspective, and has to generally ignore pre-1978 numbers because the calculations are totally different in the old days (similar to PER back then).
Using the top WS seasons, we have (ignoring the old timers):
Jordan, Lebron, Robinson, Durant, Shaq, Garnett, CP3, Robinson, Curry, Duncan, etc ....
While there are exceptions, and WS calculations are starting to heavily favour players who play on teams in eras of high disparity (like the GSW now), you have to look at the overall top seasons as well.
Then there are things like BPM (favours lone stars on bad teams) and VORP (favours players with extremely high usage rates), which again are directionally correct, and you form a good view of a player's effectiveness.
The sad thing is, players have learned to game the system, and we are seeing that Westbrook, Harden, and Durant are doing their bestest to get artificially high numbers in those areas.