I noticed the same thing when I switched to OSX about 6 months ago. In fact I even think I posted the same thing you did, that OSX seemed slow, especially opening programs.
for me OSX is definitely slower doing certain things over windows, like opening some programs but quicker in others, like saving files.
EDIT:
I found my old post HERE.
for me OSX is definitely slower doing certain things over windows, like opening some programs but quicker in others, like saving files.
EDIT:
I found my old post HERE.