The Win version is way head of the Mac at the moment, but there are die hards that only want "Mac", put Win down but don't mind using Intel, but will only use Mac religiously so that's what they are stuck with until it catches up with WinBB and WinRB. But if you are ambidextrous you can use the Win and Mac without feeling unloyal or guilty or embarrassed or infidelity, you can use Mac with WinOnX or Parallels Desktop or Boot Camp or a 2nd HD with Win on.
Apple now don't have any qualms using the Intel, developed by all the Windows users, I have an old G5 sitting beside me that weighs 10 ton and an Intel Mac that I can lift with one finger.