Because
1) you did not take out your fees and VPS costs
2) you made up the bankroll
3) its a backtest not a real dataset
4) market depth changes - larger orders move markets - 900BTC *5% =45BTC - 45BTC walls affect a market more than a 0.002BTC pajeet order
5) I do not trust you
6) your numbers are not accurate on the ROI
7) did I say I dislike you
because I said so.

you dont get it - you cannot compound numbers without taking out all costs - its just fucking made up figures - so you lie