He took a program that had been in the dumps and made it back into a solid program after a few years. He hasn't been able to make UVA into world beaters just as he wasn't able to do so at BYU but as others have said he has taken 2 programs that were both in rocky shape and put them back on solid footing.
UVA's WIN / LOSS
2012 - 4 - 8
2013 - 2 - 10
2014 - 5 - 7
2015 - 4 - 8
Bronco Arrived in 2016 and has had a pretty solid upward trajectory since being there.
2016 - 2 - 10
2017 - 6 - 7
2018 - 8 - 5
2019 - 9 - 5
2020 - 5 - 5
2021 - 6 - 2