JL had to try and overcome the stink of the entire cinematic universe it was in, being the sequel to arguably the most hated blockbuster ever is a pretty big hill to climb.
And Justice League barely had Superman in it, so really the only A-List characters they had were Batman and Wonder Woman. And even if Vader wasn't in it a lot his scenes were easily among the most popular in the movie. Star Wars is Star Wars though, it's bigger than any one character.
Um, Homecoming and Ragnarok had the MCU branding too so not sure what you mean with your last point.
They also had the bonuses of Iron Man and Hulk playing a major part in their respective marketing. In the case of Spider-Man, there is a slight fatigue set in thanks to 6 films in 15 years and the third series in less than 10 years. And many people didn't find Homecoming to be as good as the first two Sam Raimi films.
But I think Thor: Ragnarok is pretty much the best case scenario and made close to the financial ceiling for Thor, barring a Civil War like film where lots of Avengers play a prominent role in his film.
T'Challa
A.K.A. The Black Panther
King of Wakanda
King of the Dead and The Champion of Bast
Two-Time Time Magazine "Person Of The Year"
Six-Time People Magazine "Sexiest Man Alive"
Is the official digital stream version of JL already out somewhere? Rumor is that mustachegate is extremely obvious in-your-face bad on the small screen. If you did not knew it was not that bad on the big screen (at least for me). It had a very tiny bit of uncanny valley feeling but having that worse on the stream/disk?
Have the steelbook specials of all the DCEU movies... that JL preorder I am about to cancel.