Not a perfect example but here is what grabbing too much front brake looks like.
Ok, it’s a slightly exaggerated example but many times when going round a corner you get startled and have to make corrections. That could mean applying the brakes or adjusting the throttle. It’s pretty simple math to figure out that a super sport reacts faster to smaller inputs than a Ninja 250 will. Similarly, the really fast bikes have really good brakes to slow them down. Brakes that are designed to stop you from 170mph have a lot of grabbing power. With a panicked or heavy hand they are going to lock up in a blink of an eye.
And if you really need to see how fast a sport bike can be, here is a drag race between BMW’s S1000RR and a 700hp Corvette (that’s 700 hp!!!)