Honestly didn't see them, but reading the plot for Vice, doesn't that back up my claim? It sounds like it shows Cheney in a negative light (from wiki.: "Cheney's actions are shown to lead to hundreds of thousands of deaths and the rise of the
Islamic State of Iraq, resulting in him receiving record-low
approval ratings by the end of the Bush administration.").
As for W., don't know. The plot doesn't sound negative, and I don't know everything about why he took the role/how he approached/etc. I'm not saying that this is some sort of 100% you can tell a movie from who is cast, but I can see making assumptions based on the casting. Take away if what she said was bashing the old movie and all that stuff, if people believe she was attacking how the old movie was portrayed, can you see why those same people could assume she would not be in a film portraying it the same way?
But in the end, I'd agree with a lot here that it's kind of funny to be judging this movie without even a trailer. I'm pessimistic on it because the only remakes I want are ones where they tell the story from a different perspective/timeline (and I don't have high hopes we are getting that here), but I'm definitely not judging yet personally. I'm just saying I can kind of see why some people jump at what an actor says and it could impact their thoughts on the movie coming out (and again, I don't care what she said about the older film, but what she says about her version doesn't get me too excited).