Deixe-me contrapor isso com outra pergunta (e uma resposta levemente especulativa): O que faz você pensar que a Visão não obteve o poder de Thor? No filme, vemos que a Visão detém ativamente Mjölnir, não só quando ele entrega a Thor, ele também a usa em combate. Então ele definitivamente pode usar o martelo e fazer uso de seu poder. A questão permanece então, o que você define como "o poder de Thor" (e quanto disso está realmente relacionado ao martelo diretamente ou mais para Thor). São os raios? Nós não o vemos usá-los, mas ele pode simplesmente não ter feito uso deles nas poucas vezes que ele usou o martelo. É a força e invulnerabilidade? Bem, Vision já tinha isso de qualquer maneira, dada a sua perfeita forma corporal biomecânica.
Ou é a capacidade de dominar Asgard? Eu diria que a Visão é realmente digna disso também. Conforme descrito em minha resposta a outra pergunta altamente relacionada A visão é realmente digna do martelo e cenas com ele carregando o martelo um suposto para transmitir exatamente isso:
Vision seems to be the embodiment of the ancient ideal of a perfect mind in a perfect body, one that combines the advantages of a mechanical intelligence with the concerns and soul of an organic lifeform and brings compassion for his (undoubtedly inferior) human fellows, in contrast to his purely mechanical brother Ultron. He thus seems to be the ideal creation of a humanity that strives for posthuman evolution. One could say in his second try Tony Stark (with the help of an actual (demi)god and some magic alien artifacts, though) overcame his role as merely a "Modern Prometheus" and didn't just create sentient life, but a new god in itself.
And the fact that Vision is able to wield Mjölnir to me doesn't come from the fact that he is "just a machine", as Tony and Steve argue jokingly at the end, but from the fact that he is superior to us all not only in his body but even more so in his mind. And this I think is the attitude that Mjölnir is attracted to, as already shown in the first Thor movie and also in this one when Steve nearly achieves to lift it (which was not because he is the strongest, but because he is the noblest at heart). In fact, Tony's and Steve's theories about Vision being "only a machine" at the end even support the interpretation that this is not the case by the mere humorous way they are presented in. Of course their childish excuses are not the reason for why The Vision achieved what they couldn't. In fact his pickung up the hammer is a perfect and to the point illustration of Vision's superiority and immediately clarifies that to the viewers, a symbol that has been explicitly set up by the earlier scene (with the whole gang trying to pick up the hammer) for exactly that purpose.
So yes, Vision does get the power of Mjölnir and Thor with everything connected, including the abstract notion of "being worthy". But what makes Vision so extraordinary as part of his "worthiness" and what makes this worthiness and power seem so trivial (without the nice effects described in the other answer) is that he doesn't strive for this, he doesn't care to rule over Asgard, not because he can't as "a machine" or because he doesn't have a soul, but because his mind and motivations are above such "worldly" considerations. His light-handed and downplayed way to hand over the hammer to Thor and his easy ability to carry it in battle convey both his worthiness and his not caring about this at all. He is a god without a god-complex.
Então, eu me pergunto se há algo mais que define "o poder de Thor" e que a Visão faltou ou não demonstrou. O fato de não vê-lo usar todos os poderes de Thor ao máximo pode ser devido ao fato de que a Visão não precisa usá-los, ele tem seus próprios poderes (que não são inferiores aos de Thor). em absoluto). E usar os poderes de Thor ou Mjölnir acima de ser necessário não está em sua natureza , como explicado.