I agree, low fees are very important. But they don't look much lower than #BCH so the cheap algorithm either isn't working or something else is eating those savings.
Actually, if you look, Dash's fees have been many times lower than bch's all year, 14x (!!) lower Jun 21 its only since Sept that BCH lowered its fees to Dash's level. Congrats!
The area under the curve since BCH was created looks about the same to me. I guess you'd have to do a more detailed analysis as to why they differ at various times.