Just played this game:
And I was the jungle trundle. Two other players agreed with me that the xin zhao was unbelievable overpowered given items/level and thought it was possible that he could have been bugged in some way.
At one point I 1v1ed him when I was lvl 15, he was 13. Which, given I had completed trinity and jungle item and he had incomplete items at that point, I definitely should have won the trade.
Any suggestions for further testing? I'm happy to do it.