I finished 2015 with ~85k EQM, probably 75K BIS, about 55 segments.
All but 2000 EQM or so were non-UA *A (I had to scramble at the end to meet the 4 segment minimum on UA), a mix of LH, TP, LX, LO, SK, Aegean, UA, TK, OS, AC, and I think I had some SN in there as well-- as well as an award ticket in TG.
I had 2 round trips that were in premium economy on AC/LH, but no C or F tickets.
And I'm based out of BCN.
Is it possible they consider the # of segments outside of the "home" program as the main criteria? Otherwise the only thing I can think is proportion of miles.
If it's purely based on the # of airlines then that would skew the whole program towards Europe, I would think-- so I would expect they have some kind of geographic control.