You did force an overshoot. Well done, no stick stirring there. However, to that point, he was handing you your private parts, 1 .30 cal shot at a time.
BTW, why bail on the 1st duel? Seemed kinda weak. All the pluses were for you. He wins...he broke the rules. You win...even though he broke the rules. In the end, seems a win/win for you.
I would tend to believe the climb out was inadvertent. The guy did tell you that he had never flown a 202 before and then did state that he was setting the views. When he shows up in the side bar, he is just over 7k (not 8 or 9k) and is at least 50 mph slower.