Maybe, but I would be rated 300 points lower than him... In any event you won, he whinned - seems like that kind of thing happens a lot :-)
My understanding is that you resign when you are sure you cannot win - either because you are down so much material that you don't stand a chance or because you are convinced that your opponent wont give you the chance. Neither was the case here, and you proved it by winning.
This is a game from a tournament on this site and I made a blunder early on in the game. I made a few more sacrifises and kept playing. Afterward my opponent told me I should have resigned and that it was really annoying that I didnt and the only reason he lost was that he was trying to get the game over with. My thinking is, he's not master, so he doesnt deserve the respect of an early resign, before all my options are exhausted... So what does everyone think? Would you have resigned against a 1650 chess.com player?