I also have a 130 min version of QLD that has a PF of 9.5 and a higher winning % of 71% (better stats over the 78 min) and makes slightly more over the history, not a lot just a bit. I was debating about adding it as well, however the max draw down is lower on the 78 min at 12% vs 16.5% on the 130 min.  That said over the 4 years anyway the 78 min system made more than the 130 min version, the 130 min made more in 2020, and some previous years like 2009

here's an image showing the stats of the 130 min and 78 min