Individual numbers are meaningless without context. Someone who consistently posts an average daily profit of $200 day and is posting day after day over time may be doing just as well as, or better than, someone who posts large gains very occasionally.
If you're trading a $10K futures account, $200 average gain per day translates to a 500% annual return; if you're trading a $500K account, you'd need to show an average daily gain of $10K a day consistently over time to match that kind of return.
Posting randomly and out of context doesn't really reveal much. Was the big number an intraday gain or the result of a long swing trade being closed out? Were there dozens of -$25K days over the past 6 months? Or maybe a huge $250K loss shorting NFLX (sorry, Whitney).
I know It Can Be Done, but a track record of success such as the long string of daily P/L posted by Red Ink, Szeven, mksummny, and others provides real proof.