There isn't much of a split. The movie has gotten overwhelmingly positive reviews. The ones who can't get over the plot number a very distinct minority. Every review that I've read, positive or negative, mentions the lack of originality in the plot, but most also say that's irrelevant given the quality of the execution. Some even say the simplicity and predictabilty of the plot are in this case a positive, as too much complexity could have muddled things, especially given how much is already going on purely in terms of visuals. If it's trying to tell a story of huge scope and universal appeal, then simplicity is key.
I'm not sure how you think the % will actually get that low, if you've read the reviews. Star Trek, it should be pointed out, sits at 95%.
