This year is a bit lucky for me...Timed the August drop and Dec's run up correctly. My own book returned about 35% plus so far. Broker's return is about 25%.
Over the past 15 years, the return overall is around 20%. It is not even close to WB.
I'm a risk averse kind of guy...bailed out of China completely after May
and paid a lot of attention to optimize things for a low beta through hedging. It lowers the return sometimes, but I think worth it long term.