Sears is better inside the arc and around the rim, pretty dead even as 3PT shooters though. Neither has Kemba speed, or quickness though I think Sears has a bit more shake to his game.
I'd argue though that Bouie led a worse team to better regular season wins. Bama basically beat three NCAA teams all year in Mississippi State, Auburn and Florida before the tournament started.
Sidenote:
I am also confused why everyone is saying their defense has improved. Right now their defense is at 102.2 ADJDE on Torvik for the year. In their four NCAA games they have been at 106, 83.6, 108.5, 105.5. That is one very good defensive performance and three bad ones. On the flip side their offense has been on a tear for four games (125.7 ADJOE for the year) for 131.6, 107.2, 137.2, 133.3.
UConn has only been that good offensively once in the NCAAT against SDSU, though UConn's defense has been absurd from Torvik numbers in the tournament.