I don't know the answer to your specific question, but as we all know UGS qualification/requalification can be based as much on qualitative data as quantitative data; I believe that UA does take into account LH transatlantic flying in F.
I say that as I have been UGS since its inception, and while I fly the odd UA SFO/JFK and SFO/LHR in F, most of my travel is SFO/FRA, and that is mostly on LH metal on LH paper, with the occasional UA flight thrown in (although the new 5pm FRA/SFO flight has definitely increased my use of UA metal). My F/C/full Y flights on UA do not add up to 50K miles, but my EQMs and spend are significant.