Two things: no point talking about the relative "feel" of a braking system unless you've felt it: ride with proper m/c , hard , on track- forget road, not remotely relevant to the subject matter, and comparing standard to the "proper" aftermarket ones- you would want one every time:
ABS- again , not relevant, we're not talking about the fact that theoretically you can pull hard on the lever and they won't lock on you, but the fact that no braking system can overcome physics...
- brake "firmly" with or without ABS and with standard or any other m/c or braking system, whilst pushing-on,at varied lean angles and the mere forces in all planes could and do have an effect on "feel"..... through the lever, through your bumcheeks and through the contact patches keeping you going forwards and not sideways......allowing deep braking through turn -in and reduced pressure towards the apex......
None of its an exact science, it's all very subjective, what suits one doesn't necessarily suit another, however,walk around any race paddock, club race,National race series,doesn't matter....you will see a very consistent theme, and they are not OEM, racers scrimp and scrape and bodge and adapt in many areas - brakes are never that area....just my take on it.