The primary difference is the MSM, in that the Palin goldmine of slime never produced anything of value to them, and is totally played out.
On the other hand, the MSM is certain that MB is a whole new dig. Look for much of the same trashing of her, whether or not there is anything there. The question becomes: can she stand the heat, and if so recover in time to get the nomination? The same goes for any conservative candidate other than SP.
I was asking about the political differences between Sarah and Michelle. I don’t see much difference so far so I am not sure one would be better than the other.