Powe is a better scorer right now, but BBD is a better passer and has more upside.
To win now, I'd take Powe. To build for the future, I'd take BBD. Powe is what he is. BBD can be more than he is right now. For example, if BBD learns how to upfake, he can double his offensive production in a very short time. If Don Nelson gets fired, they should bring him in to tutor BBD.
..In what universe are you qualified to say Powe "is what he is" but Davis "can be more than he is right now," with a straight face?
Powe's played an extremely restricted role in limited minutes over two seasons and some change - less than 3000 minutes total - you haven't even seen his entire offensive repertoire on display nor are you evaluating his progress as a player relative the norms for a young post player.
Leon Powe is about half the player he can become - he doesn't have the physical upside that BBD has - since he isn't fat as h&ll, but he sure will be improving his post arsenal and begin using his face-up shot over the next 2-3 seasons.
The guy has: A rolling hook, turn-around jumper, rip-through, face-up jumper, fall-away, up-and-under, in his post arsenal - I could put a highlight reel together to show you all these shots but everyone has seen them.
If Powe jacked up multiple shots in 5 minutes of PT like Davis tends to do he'd probably stand out more - though every time he plays 25+ minutes he averages about 16/9...
Davis has been playing much more consistently over the past couple of weeks, but he is still far from being a reliable face-up shooter, has no post game, and makes a lot of poor reads on plays.
Powe hold onto the ball too long in the post and is over-relying on his primary post move - the rip-through - but this is not uncommon for developing post players...as he continues to work with Cliff Ray and hang around KG and Perk, he'll continue to learn how to set up his moves and mix his tricks.
I don't know how so many on this forum could have completely whiffed about Kendrick Perkins being "finished" developing 2 seasons ago only to watch him continue to develop and then have the audacity to watch a player who is more skilled offensively and equally as hard-working and not expect the same - ESPECIALLY since we've all seen more out of Powe with our own eyes...
As he ages, his game will increase in consistency - right now he is a victim of heavy minutes with a lack of playmaking PG and floor spacing center, (Davis fools no one with that J.)
When Powe plays with the starters he shines because he gets a ton of baskets on cuts and pick-and-roll, ala Paul Millsap...I think there is a lot of selective memory here and a great deal of over-reliance on short-term recollection...