Considering the effort involved for some distros just getting Win32 to work on X86_64 builds...
Seriously, Win64 support in Wine is pre-pre-pre-alpha at this stage, it's as basic as register incompatibilities (eg. it might require a patched version of gcc to even build it). There are serious brains interested in this, but as of last year, this is not a priority for wine-devs nor transgaming nor codeweavers. All you're doing is wasting your time that could be better spent rendering.

BTW, for those that self-compile wine, wine-0.9.45 came out yesterday, but again, I wouldn't hold my breath for any Win64. (binary packages for various distros should be out in a week or so.)
@zsouthboy: Yea, it only bothers me in that confused "WTF?" way - it's faster and doesn't crash, the text thing is not that important in the scheme of things. S'all good.