The difference is, as many as 10 players can score votes in a single game in that award, and even in the 100 point beltings the best player on the losing side can pick up a consolation 2 votes. Hence it's hardly out of the question for a player in a team that finishes 10-12 for the season to, as far and away the best player on his team, pick up 7-10 votes in all of the wins (which would be likely 3/2 Brownlow votes), and 1-5 votes in the losses (which would be 0 Brownlow votes)
Although I don't base my argument solely on the AFLCA, I'll concede that point. But look at it this way.
12 times, Cotchin has polled 5+ votes in the AFLCA, meaning he's been voted in the best three by at least one of the coaches 12 times. Brownlow results of players polling in 12 games since 1984:
Harvey 1998 (14), winner
Swan 2011 (14), winner
Judd 2004 (13), winner
Ablett 2009 (13), winner
Ablett 2010 (13), 2nd
Crawford 1999 (12), winner
Buckley 2003 (12), winner
Judd 2010 (12), winner
Selwood 2010 (12), eq 4th
Swan 2010 (12), 3rd
Dal Santo 2011 (12), 3rd
Mitchell 2011 (12), 2nd
Murphy 2011 (12), eq 9th
Watching Cotchin every week as I do, I think the hype is a little ahead of the performance, as it usually is. But if the umpires take a collective shine to him it may be the difference between getting 2's instead of 1's, 1's instead of donuts.
Put it this way...if he polls in Round 1, I will be jumping on!