There are a few things you might want to consider:
1) - as the account size increases, a certain psychology starts to kick in. So your returns won't be same depending on your account size. Each account size, brings its own psychological perspectives.
solved the phsyche issues already
2) drawdowns and losses depending on account sizes are different.
I think even Soros made some mega losses, after his mega wins when he "crashed" the pound.
I wonder how these losses "felt" like for Soros. Even as a billionnaire, I'd bet that he still felt some pain,
and it changed or influenced how he went to trade afterwards.
it is a mathematical formula with f % risk of the lowest amounts.Sorros was not using formulas , just speculative bets.
3) as the account size, liquidity issues can become a real problem. Not in forex ( after all , in forex the money is won over Central Banks) , but when you talk about stocks it can be.
index futures , highly liquid
So at each capital balance, you can not just extrapolate returns and drawdowns from previous lower capital balance.
depends on the maths formula
