Do you find trading the first 2 hours of different markets better than just trading US markets all night your time ?
There are 2 major considerations.
1. Trendy market vs choppy market
trendy market - the market moves in a decisive, smooth manner.
Choppy market - the market moves in a jerky spiky choppy undecisive manner.
For such a market, it is very difficult to profit from it.
I don't want to profit from such a market.
If you trade the whole of the US sessions, it doesn't mean the market will be
trendy even though the US is the most powerful economy.
2. concentration
Personally, I find it very difficult to concentrate nonstop for > 2 hours.
Take for example 17 Feb 2021.
China A50 (mid-Asian session)
European bonds like bund, btp (mid-European session)
moved in a trendy manner.
The rest of the markets were rather choppy.