Waking someone who is slept? If you have a problem with that then something is wrong with your perception of what parity is. Parity does not mean "I let my cabalmates die to mages while i watch them get spelled up by an AP".

translation: If you use sleep, it is okay for me to wake up the person you slept, thereby making it a 2v1, and making you take a risk for zero gain.

Why does this not extend to anything else? Is it because you think a 1v1 is only happening if rounds of combat are occurring?

"You got my ally to low hp, you expect me to let him die to a mage using geyser?"

It is exactly the same.