With the Internet, there isn't even a viable method to track if it IS the same people you are polling from one survey for the next.
Which is my point - Internet polls (and the awards that accompany them) aren't worth a hill of beans. If 10,000 people vote in an Internet poll it has more validity to me than another Internet poll of 100 people... but because both are Internet polls, they really don't amount to much either way.
Hence... the next person who quotes a "Reader's Choice" GOTY as a defense for anything can just reference back to this statement. Or not, I suppose.
Except it is still a Reader's choice. To give you an example, the reader's of Kotaku were given a chance to vote for their favorite game. Some voted for AC:U. Some voted for FC4. And so forth. Out of that vote the largest amount of votes went to DAI and thus it won the vote. Thus there is nothing inherently deceiving or distracting for saying it won that Reader's Choice award. The same with any of other Reader's Choice awards. Even if it is a small sampling, or larger in some cases, it indicates that from the readers of that site, they thought that was the best game of the year.
I don't really pay attention to such awards, to be honest, but I am having great difficulties understanding what is your apparent distaste on this issue. The game wins an award that indicates that people liked the game. There is no indication that these votes for fixed outside some people who struggle to grasp that people liked the game. Should they be silent about it and hide it in their marketing? Should it be not mentioned in threads which directly discuss the success of the game?
And by the way, that comparison to the EA vote is still really questionable, for reasons already mentioned here. The EA vote was a somewhat questionable crusade to discredit a video game company, just one of many instances that happened during that time period. The game award was a vote of people indicating which game they liked. If you do not see why this is a false equivalency, I really don't know what else to say, well write.