Incidentally, this is the part where GJ achieved his 70% of a Great status.
By being forced into an extreme situation where he was extremely motivated to ponder 9 Yin on his own and then immediately using it brought out the best in him. It seems working on his own, GJ was able to get farther than when people were trying to guide him.
As for him holding out, it's not like he was a threat against OYF and QQR at all. We've already seen in the past how even in an all out internal energy fight, a 50% fighter can hold out against a 100% for a while.
GJ had the advantage that it was mostly technique and we know L/R technique somehow literally doubles that (just not the internal energy).
Still, KC's a little too vehement as usual =P