I don't know about the rest, but in CS:GO online tournaments and qualifiers are usually done regionally. There is no European team against American team for example. Its Europe vs Europe and America vs America. Ping alone is forcing them to do that.Well just one more drop in the ocean, why AoE is still a long way off to professional esports. I watched for the last 15 years hundreds of tournaments of the biggest games during that period and I dont remember a single one which forced players at 10 am local time to perform.
And of course LAN tournaments are held when it's the best time for locals.