I understood your point and I am sure your math is accurate.I was pointing out that the dollar link to WAR could be a flawed approach because he wasn't actually worth $37M in 2013.Joe on steroids now?I highly doubt it.In 2009 when he hit 28HR? I have no idea. Could be juiced baseballs, could be something else. It certainly is an outlier of a season in terms of home runs and is very well timed when you are trying to earn that big contract!
That table is a creation of my own but it's based on reputable sources. Fangraphs lists a player WAR and calculates what each point of WAR is worth per year. From there it's just multiplication and addition. Feel free to check the math but I did it twice and got the same numbers. Not sure about your 2013 point either. Mauer had an .880 OPS and played 75 games at C. That's pretty valuable even if it isn't 120 games at C.
No one is saying the contract paid off. If you read the chart, it says that Mauer has not provided the value of the contract. Says it pretty explicitly. He'd need a 6.0 WAR season (basically Joey Votto) to make the contract with it. He'd basically have to play pretty near the level he's playing right now all year.
My point is that he's close to being worth the contract (conservatively assuming he ends up with 2.0 WAR he'd end up being $40 million under the contract - which averages out to like $5 million/yr) and that's with a pretty-close-to-worst-case scenario: concussions forced him from catcher 3 years before we expected and cost him basically two years without being a big enough injury the Twins got insurance money.
P.S. For fun, I also looked at 2006 to 2010. On a $33.4 million contract, Joe Mauer produced $164.51 million of WAR. That's pretty insane.
P.P.S. If Mauer puts up 2.0 WAR season, it's be worth $20 million+. Now he's not going to get that because the upside isn't there and the downside isn't but $8 million is really low. I'd see $10-$12 million and think the Twins could be getting a nice bargain.
P.P.P.S. Are you suggesting that Joe Mauer is on steroids? That seems pretty unlikely