Suntrader is correct. Even at $5 per tick, each contract's total expenses should be covered with 1 tick profit unless you have a really expensive broker.
You and Suntrader are only thinking about profits.
What about the losing trades?
Winning trades have to cover all your losing trades + all slippage (on both losing and winning trades) + all commissions (on both losing and winning trades).
Anything left over is your net profit.