Speed=problem
Delay=not a problem to anyone who actually cares to win a spar and is decent, regardless of whether it's intentional or not. I know of people who vpn to lag, I still spar them, don't care, still win. It is not hard.
"Oh, they have more experience with lagging so it's an advantage." Well ****, ban Thallen/Sarah/Shan/most of old PC players from sparring cause he's sparred a lot more than all of us so he has more experience. Jesus Christ, come on.