He didn't deny anything, he pointed to the chart he was drawing his conclusion from, and you jumped straight to a mocking tone instead of trying to make an argument without hostility.
If you ignore part of the data to suit your view, then you're ignoring. If you don't admit to it when it is pointed out to you, you're denying.
And I don't appreciate to be told to stop when I'm truthful and be accused of being hostile when I'm also just truthful. If you can't admit the truth, how do you want to discuss something?