Do style points exist in HD?  I currently have the #1 RPI in Smith DII.  I have beat some quality teams but don't see a #1 RPI team when I look at my roster.  I have won several of my games by 10, 15 and even 20 points.  Does a win by 20 give a bigger boast than a win by 5? Could my high RPI be the result of some "style point"  (20 point) wins? 

The numbers are just skewed right now. Your RPI will drop significantly over the course of the season, I'm guessing. Style points do not factor into RPI.

rpi does not differentiate between 1 point wins and 50 point wins.

RPI looks at whether you won or lost, whether the game was played at home, at a neutral site or at an away venue, your opponents'  win-loss record and your opponents' opponents win-loss records. Margin of victory is not a component. It also only looks at the data through the games currently played, so you can play a lot of strong teams early and have a low RPI when they first come out and then hit a weaker part of your schedule and see that RPI rating fall like a stone even though you continue winning games.