When both people are capable of say a 101 it’s about the same time frame. You can only do them so fast. Solo only takes a few minutes.
I don’t believe that you are doing higher pit levels than what you normally do solo but do them faster. Not unless you had some crap build and or crap gear and your teammate was meta in strong gear. Even that being the case, I bet the run for your teammate was about the same amount of time as they would do alone or longer. When we are talking about just a few minutes, what difference does it really make? Like seriously… who cares?