It is not fair to make fun of conservatives by constantly pointing out that they were wrong in their predictions about Obama. Or really that they were wrong about any subject that comes up in political discussions for that matter.
The defining characteristic of conservatives, what makes them a conservative in the first place, is fear of change. They crave a static social order. They believe that society is held together by its social mores and traditions. That these bonds keeping society together are very weak and unable to withstand change. That all men are weak and subject to corruption.
This is why so many of them depend on a faith in a higher order, one that is not subject to man's many flaws and weaknesses; a god, the Constitution, the wisdom of the founding fathers, patriotism, the flag, or the invisible hand of the self-regulating free market.
But the problems that we discuss daily here and generally in the political sphere are almost always problems with the existing order. The solutions to these problems are almost always going to require change, the thing that conservatives fear.
The net result is that conservatives will almost always be wrong. They almost always will be opposing needed change.
Besides, these predictions about what Obama would do aren't meant for non-conservatives. These are the bullsh*t that conservatives tell each other so that they can believe, at least for a few moments, that they are right about something, anything.