I think that's where you're mistaken. Reddick is not a pure power hitter, he's a contact hitter with above-average power. If you're a guy with little plate discipline who needs to put the bat on the ball, you simply can't strike out 24% of the time. I have no idea where you get this "Reddick is a power hitter" idea from though..
Also, you're talking like the guy has absolutely smoked AA, but in 420 PA's, he has a cumulative 257/.332/.492 (.824 OPS) that's good, but not spectacular.
He also regressed against LHP last year, which is a concern, since his splits in 2007 and 2008 were fairly even:
2007: 530 SLG vs righties, 524 vs lefties
2008: .524 SLG vs righties, 600 vs lefties (Even though he had limited exposure to lefties.)
2009: .461 SLG vs righties, .409 vs lefties.
That is cause for concern. If you look up his stats and game log, you'll notice that they were actually limiting his exposure against LHP.
I like the kid, as i said before, but he has a lot of things he needs to work on. One needs to look at prospects realistically.