He demonstrate his summon at his S rank revaluation and told them he could summon 100 more than he could fit in that hall. I don't think he lied about that.
I was a bit disappointed that the sparring session was just strength and speed. I hoped to see a little more.
They also dropped the need for a translator in the middle of the match.
Tiger also didn't end up coming to a conclusion about whether Jinwoo grew with experience.