DislikedTo tell you the truth, i didn't trade the 56 by chance or because AL said so, i made a long and deep research on various settings of periods, ATR, TF's and other bands than TMA.
The final result was adopting AL's settings with some tweaks, i started with the M15 and i had a 73.6 % Winning Rate in 3 Months with a 3/1 average win/loss,the real breakthrough came when i upgraded my TF to H1 my win Rate jumped to 92.8 % with 4/1 average win/loss.
My personal preference is the 56 with 2.5 ATR , H1 TF, a small position size with scaling in from top...Ignored
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Knowledge is an endless research