The only reason to have high DR would be to have high IS as well. Guards with high DR and mediocre IS are actually bad, as they will take a lot of shots but won't be efficient.
And since I also own a big man with 1 HA and 1 DR I know that is not really required to perform. You can see his stats here
http://www.buzzerbeater.com/player/30952612/careerstats.a..., all the seasons he played for me were in D1.
Now, if you take a player with decent to good D3-level skills and then you add 20 skills in HA DR, it won't hurt. I had a guy with 20/20 and 126 TSP, he did play well, but his other skills were already sufficient to make him a good PF. See his first 2 seasons with my team before he started dropping in skills:
http://www.buzzerbeater.com/player/30952612/careerstats.a...