..one of my friends who trades NQ future based on 1-minute chart makes 300-500k USD consistently over 10 years. I guess his sharpe ratio is around 4. If his method can be automated, his strategy can be applied to all liquid instruments, over all time-frames, then the profit would be easily more than tens of millions...
If his trade method was automated does not imply it will be profitable in all liquid instruments, over all time frames and result in 10s of millions of dollars.

More importantly, if it was true for your friend, he would be doing exactly that if his method could be automated. Thus, your friend would be using an automated trading system in all liquid markets in the world on all time-frames from second charts to monthly / yearly charts.
Reality, its not automated and it wouldn't be applied to different markets because of the different market context for each of those markets. For example, the dynamics involving the U.S. Emini NQ futures is not like the dynamics of the markets in India (NIFTY futures), does not have the same dynamics as Europe's Eurex Fixed Incone BUND futures nor does it have the same dynamics as stocks on Brazil's BOVESPA exchange...end of story.
In contrast, a profitable automated trading system for the Emini NQ futures would be expected to perform well in the micro MNQ futures and other Emini /micro futures.
wrbtrader
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