The charts show he was trading between Jun 2009 and Oct 2010. How much of his gains could be attributed to the market recovery in general? The Dow went from about 7000 to 11000, the Russell from about 600 to 800.
E.g. if you made 10% when overall market was up 15% for the year, you have negative alpha. [As someone could have bought index and held it through year to generate better return]
If you made 20% when market was up 10%, you have positive alpha.
That is why everyone in the investment community is 'seeking alpha'.
So the fees will be $3950 - $15,800 per day.
$15,800 - $79,000 per week.
And he surely wasn't paying retail prices - you can go down to around $0.50/future if you know what you are doing.
(In general, futures have 1:5 to 1:20 leverage)
$500 - 2,000 per day
$2,500 - 10,000 per week
$130,000 - $520,000 per year
That's just the fees. He must make that much just to break even. If you can make that much starting with $30K, you're a supermotherfucking genius.
One "tick" (minimal movement) is worth 12.5 EUR. At volume you pay 0.5 EUR, IIRC, but let's assume you pay 1 EUR in fees, everything included.
If you bought and sold at the same price, you lost 1 EUR/trade. This is the cost of business.
If you bought, and sold after a favorable 1 tick movement, (e.g. bought at 4013.0 and sold at 4013.5), you're 10.5 EUR richer - 12.5 on the difference, minus 1 for each trade (one buy, one sell).
If you bought and sold after an unfavorable one tick movement (e.g. bought at 4013.5 and sold at 4013.0), you're 14.5 EUR poorer - 12.5 on the difference, and 1 for each trade (one buy one sell).
OP averaged $2/trade over 200,000 trades; that means he had 2/3 right calls, and 1/3 wrong calls or so if he only traded dax and only had 1 tick moves.
He was very smart, but you're looking at it wrong - the fees are the cost of doing business, much like salaries are the cost of producing software. In finance, you rarely care about revenue or "notional" (which can easily run into the trillions per year for a small trader - for ~1 eur, you get 75,000 eur in notional value on the dax).
You just roll the fees up-front into your choices when thinking about it, and it all makes much more sense.
(Not trying to take away from OPs very commendable achievement - just trying to give the common perspective on how to view this)