Judging his internal art alone he deserve at Lv 75 same like with JLFW pre 16 years and combine with his external skill like Qian Kun Shift and Tai Chi his overall level would be at Lv 77 (on paper) though his actual combat perform and experience would dropped his Lv but at least on the paper he deserve at Lv 77 (overall level)..
I think if he fought QQR he would win since I think Wuji similar to JLFW than QQR have great internal skill but laxk
I mean both of them have great internal skill but lack of combat prowess and "warrior mentality"..
You think, the clumsy Wuji would has a chance against DGKB's Heavy Iron Sword and its ingenious techniques?
Jinyong expicitly stated that pre-16 YG at the HIS stage was similar to Dugu's stage with the HIS, nothing he could have taught YG after he mastered the HIS stage.
Imagine Dugu himself, in his early 30s, at the HIS stage fighting Wuji.
In correlation, when YG fought QQR, Jinyong stated that, the power of the HIS and QQR's Iron Palms were roughly equal but as the fight continued, YG with the HIS was getting stronger, mostly due to the ingenuity of the techniques.
Tell me that the inexperienced Wuji (lack of fighting Great-caliber opponents) would has a decent chance against YG.
Wuji indeed never fought someone at his calibrate same like Z3F but doesn't mean he himself not "good" as 9 Yang alone more or less equal with 9 Yin and couldn't bettered each other so pre 16 years HIS YG would have hard time against Wuji since YG martial arts hasn't reach great-hood..
Only his internal energy has not reach Great-hood, but the HIS increased his overall power to be ~ a Great, which has a force of 1000 jins/catties.
The ingenuity of the HIS techniques has surpassed Great's techniques.
Remember, if Wuji had a lot of trouble against the Persian mercenaries's techniques, what make you think he has a decent chance against Dugu's HIS techniques?
Furthermore, pre-16 YG after fighting QQR should gain some experience with the HIS.
At this point, YG level should be 78+, possibly ~80, which should make him the most powerful character in the Condor Trilogy already, even before the six-year ocean training and Sad Palms.