Lets start by refreshing that I stated that Wilt dominated in his era, as MJ did on his ... I will also add that Wilt, for a man of his height, had a very rounded game ... but I see it the other way around: few players are comparable to MJ.
MJ game, was far more complete, efficient and beautifull indeed ... be it because of how the league evolve or because of his natural gifts, MJ had a more rounded game as he was not only on top of the scoring charts but also was a perennial all defensive team member.
MJ was a really good on ball defender, had a great defensive help instict that allowed him to be within the league bests in steals and within the SGs bests in blocks. His D rebounding and his post D game against other guards were, while great, incredibly underrated. He was also a very strong player for his position.
His offense was as complete as you will ever see: good ball handling, he could finish near the rim, had an incredibly post game, had a consistent mid range jumper and was more than adequated from beyond the arc ... was good at FT line, his passing (and more for a guy with such offensive responsability, quite like Wilts too, but up to an extend) was also way underrated and with his elevation, flexibility and suspension he was capable of moves that players are still trying to replicate nowdays.
Finally, both of their basketball IQs, intangibles and clutch performances are uncomparable ... as MJ was by far the superior player in those regards. And I am not comparing two players at different possitions, I am comparing them to their counterparts (SGs & Cs), as its illogical to directly compare them, leaving era aside.
It is not a coincidence, a matter of marketing or a result of TV influence that the NBA became worldwide relevant because of MJ ... it didnt took too much for Stern to realize that he was witnessing such display of basketball greatness in one player, and capitalized on that. Nowdays, when the TV and marketing have a bigger role, we have yet to see players like Kobe and Lebron, achieve what MJ did: on and off the court.
Michale Jordan being the best player ever, isnt a matter of opinion, but rather a fact!