Ahah...
Well JLV, I'd like to know, what do you think about the rear brake reaction when you tap it ingame? Would you say it's accurate as DJ said before? Would you make any changes to it further on? haha sorry for the interview I'm just interested
I don't know what the moment of inertia of the wheels are but it could be higher for the front given its larger diameter, even though it weighs less. This could have an effect on it too. But, I just tested it out by pulling the clutch in as I left a jump - this makes sure that the engine doesn't drag the rear wheel down in speed - and the effect of rear brake and front brake are about the same doing it this way. So if their moments of inertia are different, it isn't by a lot. JLV is right again.
As a side note, don't use the front of the bike or rear of the bike as your reference frame, use the non-rotating center of mass reference frame (looking from the side, it is around the carb area I think). This way the front goes down and rear goes up in both cases of grabbing the brake (front or rear brake), twice as hard when you grab both.
Another side note, the real downsides that I see with using the front brake to drop the front is the traction issue on landing and the fact that you can't use the torques of the front wheel to whip the bike to where you need it if you've already stopped the front wheel.
It autoclutches under a certain rpm, so it still is 'realistic'. It is just as if it were automatic to your body to pull in the clutch when you are about to stall.