Did you ever go back and update any of your 16 bit code once Windows 95 released? I sure didn't. AND I'm not updating any of my 32 bit code any more either. Your mileage may vary. Heck I had to dig to find a CD that has a 32 bit of an OS on it today. I run 64 bit OSs exclusively at this point, except when testing things like this.
Sorry but those apps were multithreaded waaaaaaaaaaaaay before 64-bit versions of the OS or APPS were even created. So your impying that they REMOVED smp code?
LMFAO again, ok so you are comparing a system with pentium pro optimizations (nothing more, no SSE, no nada) vs a kernel (32 or 64-bit ) which has special instruction set instructions? Give your head a shake.
From wine's results in this one and on many others is obvious that if you compile the same program with the same compiler under both OSes, then Linux will be faster in almost every case and by a large gap.