As others have said, what "injury history"? A few games last season? Before that, his games played each season list going back have been: 34, 33, 33, 33, 30, 30, 37, 31.
Bruce wasn't a development player, they were Burdon and Hoban.
He was an out-of-college recruit brought in as a back-up that started while Davidson was injured. The idea would've been around 30 MPG for Davidson and 20 MPG for Bruce - nothing wrong with that. Once Davidson was fully fit, that's how the minutes were usually split.
Bruce's APT is fairly similar to that of starting and back-up point guards like Hinson, Franklin, Martin, Carter, Robertson, Mee, Heal, Caporn, etc. And not far behind Davidson's either.