is London the best chess opening?

@ToastBread_1

The win rate is a factor on whether the opening is good or not.

Kádas Opening (1.h4) has the most winrate (as the first move) among the masters but it doesn't make the Kádas Opening any better as well.

Yeah, because it's played by masters and when only they know they have a high chance of winning, it's disrespect to their opponent, of course they win, I'm talking about the average player's opening compared to the London, not Master's win rate.

Five or six years ago, a guy at a tournament asked me what I play against 1.b3. I told him 1…a5. He laughed. We were paired in the next round. The game began 1.Nf3 Nf6 2.b3 a5. I outplayed him in the middle game and won.

Last February, an old friend and I played in a tournament. That game began 1.Nf3 Nc6 2.b3 a5. In the first sixteen moves, I played 11 pawn moves and 5 knight moves. I won his bishop that started on c1 when I trapped it on g3. From there I launched a decisive attack against his king.

That starting move doesn't mean anything, it's just that your opponent made a mistake and you seized the game.

The win rate is not a factor at all, the most important factor is, how well does the opening do when after the opening, when top (a few) moves is played, the winrate is the most important factor.

And that is calculated by the chess engines.

You just said "the win rate is the most important factor"