Well you're free to cherry pick stats with arbitrary cutoffs but here's the bottom line, Smoak has a career war of 0.5 in 2800 PA's, that's 4 and half full time seasons worth. He's a few months away from turning 30, if you think this is a guy worthy of an investment then lets agree to disagree.
edit: and i don't get the Mark Trumbo thing at all, he's had 3 league average seasons before. Actually, he's only been bad for one season. Before this year Trumbo's career numbers were considerably better.