maybe a stupid question, but why upgrade the brakes?

[Over2tonsoffun]

I understand the need to stop and with a G machine you have more performance. Thus needing better brakes. That I understand.

Is it Putting bigger brakes thus larger area for the pads to grab. or using bigger brakes for the ability for use of 4/6 piston calipers, thus more clamping force for better stopping performance.
Then there is the heat generated by the usage of the brakes on track. I do realize the larger brake rotors dissipate heat better.

I am looking at the rational for the upgrade.

Thanks

Tim