I just did this at Kaiwah off number 1
First shot in 17MPH headwind at about 4:30...full BS with cheapo BES ball (10 credit balls) and my G10 270 td driver....result 251 yards...just a pixel "off ding" towards wind direction
Second shot off #1 18 MPH heawind exact direction, full topspin...result 251 yards shot dinged.
IMO (with the balls I uses anyways) I see not enough difference to worry about it...I will be back in a bit to update a nuetral spin when the wind cooperates.
Okay...back with more info....19MPH (at 4:30) wind nuetral spin missed ding by one pixel to the right (wind direction) shot traveled 254 yards.
Regardless of how nyone want to interpet the above info, I see no benefit on drives...I see a 3 yard spread...yes...things may have bee a yard longer/etc with a ding...but for me I maybe ding 1 in 5 shots.
I do however use the heck out of TS and BS to the greens...biut thats a different subject.