I still fail to see what the difference is, if one even exists. I don’t know how you could look at, say, the three Thor movies and say there’s one clear vision guiding them.
Feige has been guiding the MCU in phases. Phase I had all of the films introducing and leading into the Avengers. Phase II began introducing the Infinity Stones, and Phase III has been leading into the final confrontation that will retire most of the original heroes and introduce the next generation. Throughout each step Feige was the one deciding on which hero to focus on next and where the story of the franchise as whole is heading.
Feige has a vision for the Marvel franchise, sure, but so does Kennedy with SW.
And that vision would be…?
The Sequel Trilogy was conceived by George on his way out and Kennedy has gone about executing it. The standalone films were an answer to Iger’s demand of having a minimum of one film a year. Rogue One was a random pitch from John Knoll, Solo was done as a favor to Lawrence Kasdan for agreeing to help with the re-write of The Force Awakens.
Feige is intimately familiar with the Marvel franchise and is actively shaping its cinematic universe. Kennedy on the other hand hasn’t displayed much familiarity with Star Wars and the decisions thus far have all seemed strictly reactionary. Should Kennedy leave? No not at all but it would probably be a good idea to appoint a Narrative Lead to figure out where Star Wars can go from here.