The biggest difference in your screenshot?
Most of your kills were in an LA-7. Most of Skyyr's (744) were in a midwar 190A5, with another 84 in a 109G2 and a Mossie. Go check for yourself. 
He outperformed you flying midwar aircraft while you flew a 5ENY LA7 
Oh, so context is relevant? Let me put this out there, then, again. Solo vs having buddies be bait and/or saving him.
TBF, Levi and other "names" often flew with skwaddies, so there's that, but... they also could handle themselves 1 v 1 better across the board, imo. Grizz and Skyyr were similar in regard to being about the kill, but Grizz was also capable of fun, especially earlier on in his career.
Also, this. Looking at tour 219 stats where you claim Rusyn "broke the scoring" - they kind of are mediocre. Even the majority of his fighter kills were in a,

, la7

and the 2.3 k/d in the ride is... mediocre.