I know both Merlin and Gravecrawler and have become friends with both but I went with Adorabear for the following reasons:
Merlin, while one of the best players in the game and while he is very helpful to a lot of players, started really late into 2014. Because this is player of the year, Ill wait for Player of the Year 2015 to vote for him.
Gravecrawler is just the opposite. While he was such an inspiration to me starting out and while he was very helpful to the community, he quit the game and never returned. I see this as a sports player playing the first half and then leaving because they didn't like the sport they played. Because of this, I wouldn't give him Most Valuable Player even if he did score a couple points.
Adorabear has been here since the near beginning and has continued to dominate players and continues to be an asset to the Council (which in turn helps the game). He is so friendly to new players and is one of the most well known players in this game and probably will be for some time.
If I had the option to vote twice I would have voted for SDSakuragi for his efforts on the forums and his helpfulness to everyone.
Goodluck to everyone in the Player of the Year 2014 o/