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EBD is just a refinement of ABS. Brake proportioning valves limit brake line pressure to the rear wheels mechanically. ABS can do the same job electronically.
EBD is more active in cornering or other left to right asymmetrical road grip situations.
Lifting two wheels on the same side of the car isn't maximizing available grip. Lifting one wheel (should be the inside front for rwd and the inside rear for fwd) is an artifact of roll stiffness compromises. Ideally, the roll rates are adjustable front to rear an all four wheels will contribute cornering grip. If fixed roll rates are required then maximum grip will inevitably lift the inside none driven wheel. The more power you have the sooner that inside wheel will lift if you seek maximum cornering grip under power. Under braking all four wheels should be firmly on the ground.
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