I’d say your prediction is correct...
People willing to vote for anyone in opposition to any democrat will number 37% to maybe as much as even 45% of the popular vote.
The RINOs have a better chance against Hillary than against Obama I’m afraid. And I consider Obama to be the more dangerous of the two.
The positive in Obama’s favor is because he is an unknown quantity, he could get a lot more votes. Because Hillary is so well-known and the fact that almost nobody doesn’t have an opinion (positive or negative), she is instantly polarizing. A lot of Dems recognize that and think going with empty-suit Obama is a better bet.
And, yes, you’re right, he is more dangerous. He is either the most or tied for being the most extreme-left Senators. We know the kind of criminality Hillary will engage in, but we have no idea what Obama is likely to do.