I don't know if there is any real info you can get from that. I have been talking to people here. Solid GOP voters who didn't bother to vote because they said that the selection of a nominee was settled with Romney and why bother wasting gas to do something that didn't matter. Apparently the people voting here were folks like me voting against Romney on principle. Not a true sampling of the voters.
Let's be honest, Presidential Primaries in PA are lame because we vote so late. It is settled before it ever comes time for us to vote. People are programmed not to care. I do know that the people I talked to are ready to stand in a 5 hour line to vote Obummer out, even if the other choice is a carton of orange juice.
That is PRECISELY why all 50 states and territories should go simultaneously with a single primary. And NO "proportional" distributions of delegates. Schlubs such as Romney benefit from the status quo, because their funding and organizational advantages carry them further through the long haul.