I don't think the bevel has anything to do with tip or blade curling.That would be more about broadhead construction and quality of steel.A tanto tip will help in that regard though.
I don't know that they would bleed better.I liver shot an antelope last year with a Grizzly and the entrance and exits were normal slits in the skin,the same width as the broadhead.The cut through the liver however,was 2" wide,measured with a tape,through and through.I don't know how it did that unless the broadhead in turning was causing some tension as it cut? I don't know but I hope to shoot some more stuff and see if that happens again (in lungs).That's all I know.
I lean toward tough,well constructed broadheads these days and about any quality broadhead with good steel and of course a razor edge,put in the right place will give your moose hunt a favorable ending.
Good luck.That's a tremendous tag to have.