TBH, i think your opponent was legitimately drinking wine. So he was not necessarily being rude/ bad sport on purpose.
Also he is not playing that slow... (that is not how you stall)
(Last turns)
Viking v. You
2 minutes 0
0 minutes 1
2 minutes 1
4 minutes 1
2 minutes 2
2 minutes 1
3 minutes 0
2 minutes 1
4 minutes 1
4 minutes 3
4 minutes 3
1 minute 2
1 minute 4
4 minutes 2
4 minutes 2
3 minutes [booted]
Average 3 v. 2
Furthermore, his boot rate is 27% so of course booting is part of the game to him. I strongly doubt that this has favored him in the long run. (He loses more on boot, then he wins.)
Not to mention that to a drunk player, the game is definitely on when you leave. I mean turn 12, he broke Russia. And the difference in income is only 4 (and no offense, but a lvl 50+ vs. a lvl 20 will then expect/try to win.) Two turns later, he may not have realized that the game is very bad for him now. He would at least try one more turn to see if he can steal russia, and regain West US. aka too early to surrender.
In my opinion the evidence would only show Viking to be a normal 1v1 Auto game player. (When you get up to a higher level, you will see that the super good WL players play mostly in the ladder and not Auto games. Thus, although your advantage is winning, in an Auto game it is not over yet.)
Edited 1/17/2016 04:10:21