It has a better flow, probably mostly because it’s only his version he’s using, whereas Whedon was forced to use bits and pieces of 2 versions, with no prior experience with this DC universe and somehow make it work.
Let’s also not forget Snyder had like 6 years to think about it and make this version and pretty much an entire extra year to edit.
Without getting into the atrocious decision to make it 4:3 format, It’s still pretty much a shit movie, in my opinion, and especially bad considering how much extra time and effort he got with it, but to each his own.