XXX was far from a good movie, but it was still a sizable hit, and it did well mainly due to Vin Diesel. Also, GL1, the person cited that as the idea that XXX 1 and 2 are examples where it WORKED. So you make no sense there.
And yes, people do not like it when they switch stars or roles of the main characters for sequels and it usually bombs after the first movie is a hit.
National Treasure 2 would not be as big a hit as it is WITHOUT Nicholas Cage.
Also look at Bruce Almighty to Evan Almighty. They made a sequel to Bruce Almighty WITHOUT Bruce. It TANKED. I can name many others.
Look at the examples above, my opinions are based on the reality of failed sequels and spin-offs for movies that people like you refuse to acknowledge.
Here's the basis: Make a JL movie starring John Stewart GL in order to give a jump start on a SOLO GL movie. Then you jettison Stewart in the spin-off movie to Hal Jordan. THAT DOES NOT COMPUTE for movie audiences. Just because the comics have Green Lanterns trading places every week doesn't mean it will work at the movies.
Wow, you're confusing 'acknowledgement' with 'agreement.' I acknowledged your point by stating a counterpoint:
The change in cast was not the cause. Something which you have yet to disprove. If logic is the standard, then the ball is still in your court. All you did was give another example in which someone made a bad movie with a different actor and claimed, without reasoning, that the change in actor was the cause.
Unless your point is that this phenomenon only applies to bad movies which are carried by good/popular actors, in which case, yes, that would be true. But a good premise carries itself, even if the actors change. James Bond, for instance. They don't even PRETEND to have continuity there.
Perhaps if I say xXx and Fast and Furious over and over again, you will understand that I have acknowledged and refuted your points and that you have yet to come up with a counterpoint. "People like me" have to do that sometimes.
I've bolded my counterpoint in the hopes that you might actually reply to it instead of naming more examples of what you percieve to be a trend. Perhaps I should name a bunch of sequels that kept the actor and tanked as well. Would that kind of useless illogical foolishness seem like a logical argument to you?
EDIT:
You remind me of a movie executive. You just seem to be looking at trends and drawing conclusions based on arbitrarily selected cause and effect relationships, referencing what "everyone" will think based on these trends. You don't seem to spend any time questioning the why and how of the trends you perceive, and as such, while you can
feel completely justified, you aren't actually using logic, just assumption.