dear liberty,
as an investor,if some one is taking 20 % to 40 % annual return ,on his investment ,he must be happy,this is the international standard of best annual returns on non leveraged investments
this comes 1.5 to 3.00 % approx. Monthly.
But as a trader your return should be 5% monthly ,if you are not leveraged.it means if you are trading in equity not future and options.
If you are trading in commodity market then 5 % x 20 time leveraged becomes 100 % monthly return.other wise trading is a very risky game.
One should stay away from it
in your above quote ,you should remove ((((( trading the commodity markets)))),then your above statement will be 100 % perfect ,as an investment point of view in equity markets!!!!