Kasich is only similar to Huntsman as a strong general election/weak primary candidate but the reasons why are different.
Huntsman was more alien to most GOP primary voters- a Mormon and one who came out as secular at that- but he was palatable to the establishment had they not already found Romney. But his betrayal was working for Obama. Christie is in ways a better comparison to Huntsman.
Kasich is more Huckabee: an Evangelical Christian whose betrayal of movement conservatives as governor is on things like Obamacare, (as well as a congressman on guns). And some of his rhetoric may alienate some big donors as much as the Tea Party.
It may, but I wouldn't count on it. Kasich did spend years an investment banker for Lehman brothers after all. I have to imagine he understands how not to tick off businesses. He may be religious but he has far more sense than Huckabee.