Because for the moment that is the only way to get both the left and the right pedals to actuate brakes.. As it is now only one or the other pedal will work the brakes.. Thuis is still not true differential braking because you have to use the rudder while you turn but it simulates it closely enough so that you can feel as though you are using differential braking.. L rudder .. L brake.. turn left.. R rudder R brake .. turn right.. as opposed to L rudder R brake .. turn left .. R rudder R brake turn right or vice versa.. but if this was coded into the sim we would not longer have to do this just as we no longer have to edit our config file to get widescreen support..

While I would like to see accurate braking modeled.. as in the planes that had separate toe brakes with separate toe brakes and the ones with a lever just one.. I have no idea how much work that would entail.. but with making the work around easier to do .. that seems as if it would be a very easy fix.. just a matter of adding a line of code to the hard coded text file..

Yes, but that is how the system works in the Spitfire (for example), to use both brakes you use neutral rudder while holding the brake lever on the control column,and both brakes will have equal air pressure.
So currently, using pedals to turn right requires you to push the right pedal, then press the brake key, as it would work in the British aircraft?
It is still "true differential braking", just a different implementation from most other aircraft.

For hydraulic differential braking aircraft like most (all?) US aircraft, it's not just wildly inaccurate, it's also woefully inadequate for carrier ops - which was a HUGE aspect of the war for the US, even though it's badly neglected in the game... :(