For the most part, you can consider a home team and a road team two entirely different teams. Arkansas is always, ALWAYS TOUGH at home. That's why the State 2004 team was so special...it is INCREDIBLY hard to win college basketball games on the road. There are really only 5-8 teams in the country that can consistently go on the road and win.
This is why the rpi weights home/rd wins like they do. Home win = 0.6 win. Road win = 1.4 win.