Are you forgetting how in' strong David Ortiz is/was?
Also, DHs are specialist positions, like a goalkeeper. Goalkeepers have had top sprint speeds clocked as low a 16mph (they might be faster, but they don't routinely use their speed). Ortiz reached 16mph in his last season. Goalies need a good vert, quick reaction times, and a strong leg, but DHs need quicker reaction times, load of pure strength (yeah, Ortiz's 6'3" linebacker frame is a product of his hand-eye coordination
), and some speed. DHs who can't run are worthless. Pujols was the worst player in the league by far and should retire, even though he had a 20HR/100RBI season.