Sure happens like that quite a bit, doesn't it. That home floor advantage with the crowd, and refs most often shift their calls in favor of the home team and against the visitor. That's why everybody seems to whine about the calls when they lose an away game. LOL
If you can win most/all of your home games and then come back home with wins at about half of your away games, you'll be just fine. Hard to win on the road, even against teams that are not as good as you are.
And let's face it. How much difference, really, is there between the #50 team and the #40 team or the #30 team and the #20 team on any given gameday? When it takes so few players to put together a really great team, it's no wonder there are a TON of truly great basketball teams.