I think barracuda has a good point of being up to the B pillar at turn in because the guy your chasing may have a real early brake point. I think everyone agrees that you need to stick the corner and if you are on the inside you need to be able to hold that line to give the other guy a fair chance of getting our of the corner themselves clean. And Godzilla is definitely right about you need to pick your spot and it may take you a few laps to do it. Especially when you are racing around people that are the same pace as you. Heck Ive had a few great battles where I've sat behind guys for half an hour and just could not get it done.