Dainese use the same length zipper across sizes, so you can mix and match.
Maybe Rev'it don't.....
If it was me, I'd try to get it fixed - the pull might damage the zipper.
Or you can just try how it works and repair it if it fails - more or less same job.
Rev'it uses either 71 and 75 mm. long zippers. On some garments they use both . As long as the elastic has enough give to avoid discomfort I wouldn't (and don't) worry about it.