Fred
M em b er e d
engine braking > rear brake
Nope, wrong. It's less effective. It's more complex to do and thus eats into your reaction time. It doesn't provide a predictable braking force. As the bike lurches forward in your scenario, you're upsetting the chassis of the bike and adding to your danger.
I don't wish to be rude here, but the fact is, you are totally wrong about this. I can only recommend that you find an empty parking lot and practice some emergency stops from 30mph. Use engine breaking, use just the front brake, use just the rear brake, and finally pull in the clutch and use both brakes. Practice each method a few times to get a feel for it. Once you learn how your brakes behave in that situation, I promise you that clutch in, both brakes will give you the shortest stopping distance.
Fred