Hi Desita,
I think Petko was just explaining how to get more active EAs. It is up to you, also, trust in the generator, if it shows you strategies that are with small SL and TP with your historical data, than it might be better.
keep in mind that the more active the EAs are, the more spread you will give the broker
it is good to diversify the risk, have active EAs and have some with bigger SL and TP