If your account grew by 50% in one day then you're gambling and/or your account is tiny.
So let me get this straight, you weren't profitable ever before and because of a one-off fluke trade that happens once every few decades you're profitable.
Thanks for clarifying your status on ET, you'd be referred to here as a "piker".
I have posted my stats from my broker here, you've just posted a few images showing your supposed platform with arrows.
You don't have to be very leveraged to double or clean out your account when there's a 30% change in price. Buy 1000 units of USDCAD with 5% margin requirement, and you will walk away with $300 after a 30% move in your favor. Nobody expects these big sudden moves with currencies. That's why heavy leverage is required. Otherwise, you're wasting your time, whether or not you want to call this gambling. I.e play it safe and make minuscule amounts of money, or take bigger risks and make it worth your while. However, if you make it worth your while, a sudden unexpected big price change will wipe you out.
Don't try to compare this with stock trading. This is a different ballgame.
Last night I bought 2k units of cadchf. If I had a $100,000 account would this trade be worth my while or is it a waste of time given the more typical price movement in this pair? Would it be worth my while if we had a 30% change? It probably would be.
Do you see the problem with your argument?