“Let's look at things from another point of view.

Four first turns nothing goes wrong for me. My opponent starts complaining about the dice. When I snake eye on a very crucial go for it next turn, he makes three dodges and a succesfull blitz, ball in crowd, succesfull pickup and runs deep.
Dice turn bad for me and i don't manage to get the ball back so 0-1.
I didn't say grats, I usualy say it when my opponent scores a nice TD though. Or when I feel like it. Sometimes I don't say grats even when opponent scores a beautiful TD or when I don't feel like it. Does it matter?

Next half my opponent don't fail a thing. I got only 9 players and there is little I can do. Suddenly my opponent makes a mistake making a one die block blitz (no block on the player) at the beginning of the turn. He rolls a straight pow, needless to say it's a massive opportunity gone. Getting a bit bored with the dice, I make the sarcastic comment 'sure'.
A turn later, my opponent knocks out a player, and makes the comment 'You don't say sure now'. To me that was kinda insultive. He was allowed to complain in the first half, but when I make a small remark it should not be done apparently.
After that I get a dot of a chance to equalize after he makes an unnecessary dodge with the ballcarrier, and fails. Now my opponent again has the right to complain, while I'm just thinking 'why dodge?'. But in my turn the handoff towards a pretty sure TD fails, and again my opponent reserves the right to make fun of my dice again.

The way I see it you are always allowed to complain about your own dice, but making fun of the misfortune of your opponent is just pathetic, and that's why I called you that.

And please, if I only play to win and not to have fun, I wouldn't have played this game over 1200 times. ”