You are right, my question was unclear. It should have said: let's say White scores approx. 55 out of 100, in GM games. Now, how much do you think White would score if forced to play opening A? How much, if forced to play opening B?
I've read tons of pages about openings. Still, I find this question interesting.
Thanks.
Consider these two openings (only one move):
A)
B)
How much would it matter for good chess players (let's say 2000+ FIDE) which of these openings their games started with?
Let's say White wins in approx. 55 % of all GM games. In what percentage of games do you think White would win, if forced to start with opening A? And what if forced to start with opening B?