From today's Kevin Goldstein column on BP, he ranks Bruce as the #2 corner outfielder in the minors:

The 12th overall pick in the 2005 draft, Bruce's season has been a revelation. He's among the Midwest League top five in all three Triple Crown categories and leads the circuit in extra-base hits and slugging percentage. When it comes to Bruce, Gonzalez and Tabata, you could put all three in a hat and however you pull the names out might be the right ranking. I give Bruce the edge because he has more present-and-accounted-for skills, as his OPS is equal to Gonzalez' and he's doing it in a far tougher offensive environment. The average numbers of runs scored in a game played by Gonzalez's Lancaster Jethawks is a whopping 12.31, while a game played by Bruce's Dayton Dragons averages 8.94. That's a highly significant difference. There are no weaknesses in Bruce's offensive game, 58 of his 119 hits have gone for extra bases, and if you believe in the axiom of doubles turning into home runs, Bruce has 39 of them to show you. His plate discipline is solid, and he even has 18 stolen bases. There's nothing not to like here.