I have a problem with your post. On the surface, just casually reading it I feel some kind of agreement. Obama was a huge disappointment to me. He ran, in my opinion, as a progressive and turned out to be a centrist lying traitor. That was a disaster, and a big one for me, but a centrist democrat isn't the worst disaster that can happen and that's where I have trouble with what you might mean. It could be that what you mean by a total disaster isn't one according to me and I have a bad habit of preferring to think along the lines of words used according to MY definition.
This raises for me a certain sense of suspicion like what if your sense of disaster is off. That could mean that what I call the best of Obama you call a total disaster and what you call a different kind of disaster might be paradise on earth or at least some hypothetical and as yet unrevealed portion of Trump's thinking that is actually right.
So anyway and furthermore, there is one additional point that is giving me trouble. How could there be a set of | different disaster | that would not be contained in the set of | total disaster | ?
In shout unless you tell me what the Trump disaster is in your opinion, and what you think was wrong with Obama, I can't really use your words as saying anything and that is something most people, I think, would not want to intend.