Soda, I think you'll get two different answers.
Many people think the Winchester stuff is loaded light, but still hotter than standard 9mm. Others say that it's just about right. It's been awhile since I used the "real" stuff, so I really don't remember how hot it was. I'd say (with my fuzzy memory) that it's very very close, but probably still a little light. Not light enough to make a difference (probably like 25 fps or something), but close enough without raiding a government armory.
Try it...you'll like it! It's worlds apart from that Olympic stuff.
Goalie