Yep, I know.

Assuming what you are alluding to is the fact there are two meaures in those graphs, one for All Signals, and the other for Strong Signals, and assuming you are assuming the Strong Signals are just that, strong signals.

I first thought the Strong Signals only looked at the strong signals for the IWM Robot. Apparently, I am wrong and the Strong Signals include all "non-neutral" signals, i.e., both buy and strong buy signals (for long entries).

My assumption about the nature of your question could be wrong, of course.