Just off the top of my head: Spencer Nelson, Nate Harris, Gary Wilkinson, Tai Wesley, Jarred Shaw and David Collette (not to mention Kyle Davis). That's just the standouts. There have been several others that I would consider successes during the last 10 year span as well.
USU recruits from the same geographic region as does BYU. It recruits to a smaller and less prestigious school that is more isolated and offers fewer academic and athletic opportunities compared to BYU. It's facilities are far smaller. It competed for most of the time period in question in an inferior league compared to BYU. And yet, the big man recruiting and development results are decidedly better. Go figure.