First, you have to check his college stats. They were, in fact, pretty good.
Second, he has really no competion. Matt Brown was a back up strong safety for Washington for several years and his stats are, well, ok. Coy Wire's role on defense has seemed to deminish over the years after we signed Milloy. Even though he's slipped at strong safety he a crucial piece of our special teams. Rob Lee, forget him, he'll be 4th on the depth chart.
Third, he's fast and a good tackler. Check out some clips of him in is college games and you'll see what I mean. Yeah sure, he needs to work on his strength, but he's tough and he can tackle well.