Now, if both FL and MI, who has the lead in elected delegates? I think it is currently Clinton, so Obama has to overcome those unseated delegates to make the argument.
You're right that if you include FL/MI delegates, then Clinton would currently have a lead in pledged delegates.....though if the MI Uncommitteds break heavily for Obama, then Obama would lead.
In any case, I still think your point (if I'm understanding it correctly) is relatively uncontroversial. You're saying that if Obama wins a majority of the pledged delegates minus FL/MI, he'll try to claim a mandate, but that if the total pledged delegate count *including* FL/MI has Clinton in the lead, then she'll claim that *she* has a mandate, and the supers won't just all fall in line behind Obama. I think that's right. In short, there are four different definitions of "victory" in the primaries:
1) Winning the most pledged delegates (not counting FL/MI)
2) Winning the most votes (not counting FL/MI)
3) Winning the most pledged delegates *including* FL/MI (regardless of whether those delegations are actually seated)
4) Winning the most votes *including* FL/MI
If either of the two candidates is the winner according to all four of those definitions of victory, then I can't imagine the supers overruling that choice, and nominating the other candidate. But if different candidates win according to different criteria, then both candidates will try to claim a mandate, and the supers will split, though it's not obvious to me exactly how they're going to split. It depends on the circumstances.