I'm around 2000 ELO in chess and I'd win every single game vs anyone with 4 pawns or a minor piece handicap. You'd only break even starting from opponents at a

I'm around 2000 ELO in chess and I'd win every single game vs anyone with 4 pawns or a minor piece handicap. You'd only break even starting from opponents at around 2400 ELO, and would start losing about 2 out of 3 games when facing a top rank grandmaster. Being a single pawn up is usually decisive in chess. It only gives you slighly less than a 66% chance of winning (a bit more close to the endgame). There's no point in arguing from your personal beliefs here. You're vastly and utterly overconfident in your own ability. The definition of the rating system and a few million games of evidence are against you.