He fights for Post position maybe as well (or a little better than Dice), he's 6'9 in Shoes (pre-draft), improved jumper, rebounds average but boxes out well, hedges screens well, especially for a larger player, and isn't afraid to shoot with confidence in both the season and playoffs.
Blair very well may be a great rebounder, but he'll likely never have the shooting touch and confidence of Davis. What's more, a shooting big like him would work great with Duncan, obviously.
Anyway, Dice is better now, but if the Spurs can't get him, I'd like them to make Davis an offer.