Result
What the number contains
Gross profit is the price difference times position size, with the sign flipped for a short. Fees, though, are paid twice — on the entry price when opening and on the exit price when closing — so they are not simply double one number. On a trade that moves tens of percent the difference shows.
ROE is not the return on the trade. It is profit against the margin posted, the big number from the screenshots: a 2% move at 10× leverage is 20% ROE, but the market still only moved 2%. Leverage does not change the result in dollars, only the denominator.
The calculation knows nothing about funding, which perpetuals charge every eight hours and which slowly eats a long position, nor about slippage. The break-even point is therefore a little further out than the line under the result suggests.