one way to proove they are dragging the brake into the corner is to watch the suspension travel between the front fender and front fairing. you can definately see it compress in braking, the begin to ease up as they have made the turn entry, and eventually it winds up rising up as they are on the throttle. it also makes you wish you had that kind of smoothness
i'd also like to point out i think that it matter what kind of bike you are on... if you notice GP bikes use almost all of thier ground clearance while cornering, and are not at the maximum of traction because they can still brake. if you have a ninja 250 with stock everything, most likely you will not have nearly the traction left when you have attained full lean angle (ie no clearances left). plus, on a smaller bike, you want to carry speed as much as possible, because you don't have 220+ hp driving you out of the corners. this can be evidenced by looking at the lines traveled by superbike riders and supersport riders... superbikers tend to "square off the corner" to pick the bike up as soon as possible so that they can use the drive, the best part of a superbike, to get down the next straightaway, whereas supersport riders tend to carry all possible speed into the corners. another example... i heard it said that a couple years ago when ducati was dominating supersport that it was easier on the rear tire for the ducks to be able to come in a little slower, and have all that midrange oomph to drive out of the corner, while the 4 cylinders where having to come in hotter and would wind up cooking the rear tire faster due to the faster turn entry. at least i'm pretty sure that's how it went. anyways, i think the best style for a person is the one that allows that person to get around the track fastest.
i nominate this thread for "longest thread on CSS forum"