Although I do understand the frustration trying to match up planes based on speed charts, I have to say that's not the way we do things.
We use real in game checks to lay out the events. We spend a great deal of time putting planes in the conditions of the event, and seeing how they actually perform, and then balance accordingly. Oddly enough, we've ran BoB twice before, both sides have won very close fights, the plane balance is just fine. Far more goes into an event than matching the speed charts. Don't look to those as a major contributor to an event, you'll always be disappointed.