Why is Jonny that much faster?

Yesterday, Jonny was way faster than anybody else. While talking about start gates and people out in front who could be his thermal markers, he told me that they didn't help him, because they where all circling in weak lift. I compared our track logs and indeed, Jonny's vario profile is completely different than mine. His vario averaged 1.9 m/s, mine averaged 0.9 m/s and the glides where comparable...

Jonny only turns in good stuff, I have to learn how to find that.