Ok, it wasn't just often injured Canadian third baseman Brett Lawrie that was sent to the Athletics. It was also Kendall Graveman, Franklin Barreto and Sean Nolin. But Donaldson is one of the best players in the game.
If you look at WAR, only Mike Trout has been more valuable than Josh Donaldson among position players the past two seasons. Josh Donaldson's wins above replacement is 15.4. He finished fourth in 2013 and eighth in 2014 in AL MVP voting.
Sure, we gave up a lot of prospects along with Lawrie, but look what we got back. This move improves the Jays, and has me pretty excited about 2015.