I also think it more likely some creep will target a woman dressed in a mini skirt over sweats, but I'm not saying harassment of girls in sweats doesn't happen. You seem to be implying that if all things are equal, a girl that only wears sweats will be harassed equally as the same girl that only wears mini skirts. "I don't accept that line of thinking".
Do I have to go Mr. T on you sucka fool?
Let me try to explain some simple mathematics for you.
Boys - look.
Creeps - ogle.
Harassing Creeps - Harass
In your research you found that when you wear sweats 25 boys look at you, but when you wear a mini skirt 50 boys look at you per hour.
The number of creeps to boys is 1 in 25. The number of harassing creeps to creeps is 1 in 10.
If you wear sweats it is likely you will be harassed at least once in 10 hours of walking around in sweats.
If you wear a mini skirt it is likely you will be harassed at least twice in 10 hours of walking around in mini skirts.
Basically, you get more attention and you have just increased the odds one of the people in that pool is a harassing creep. Simple math.
The only thing you can do to attempt to refute this is to stupidly attempt to state that more boys do not look at girls in mini skirts as opposed to sweats. As proof just read the entire .gif thread and the rest of jazzfanz.
If you want to make it more complex you start to worry about the places you go, the types of people you see and the odds of finding a creep in the different situations you are in. Are you with friends or alone, are you in small groups of people, large groups of people, or walking alone in the dark in a neighborhood that some view as "rough". So many factors.