Yikes - I'm a big Killebrew fan, and I cringe whenever I see him compared to players like Dunn, or even Thome. Even if you double Dunn's prime stats, he ain't no Killebrew.

Killebrew won an MVP, Dunn hasn't.
Killebrew was in the top 5 in MVP voting 6 times, Dunn never has been.
Killebrew was an 11-time AS, Dunn was twice.

Killebrew was a 6-time HR champ, Dunn never has been.
Killebrew was a 3-time RBI champ, Dunn never has been.
Killebrew was in the top 5 in RBI 9 times, Dunn never has been.

Killebrew was in the top 5 in SA 10 times, Dunn was once.
Killebrew's BA was 3 points below the league average, Dunn's is 30 below.
Killebrew's SA was 116 points above the league average, Dunn's is 66 above.
Killebrew's OPS was 160 points above the league average, Dunn's is 94 above.

Killebrew led the league in strikeouts just once to Dunn's 4 times
Killebrew was in the top 5 in SO only 5 times to Dunn's 11
Dunn has struck out an incredible 64% more frequently than Killebrew (despite Harmon's hit-or-miss reputation, his strikeout frequency was only 3 percentage points higher than the league average during his career)

My favorite stat for Harmon is one I've never seen published anywhere: In 10 different seasons he hit 25 or more home runs in an 82 games or fewer stretch, with 33 in 81 games in 1964, 30 in 82 games in both 1959 and 1969, and 29 in just 75 games in 1967.