I am not capable to understand what is advantage of having Keltner Channel on chart versus Three(3) MA either simple or exponential (High, Close, Low)? Why Keltner channel guarantee more sucess in trading then those three MAs?
Because it's different from 3 MAs you can set in MetaTrader. Only the middle line can be set using standard MA. Upper and lower bands can't be simulated with the standard MA.