Okay, some groud rules on this whole Obama is a Nazi versus the Bush is a Nazi thing.
1) Yes, it's hilariously hypocritical for any lefty who even hinted at the F-word to complain about right-wingers calling Obama a Nazi after eight years of OMFG Bushitler! and they should all have their own crap pushed down their throats every time they open their whining mouths.
2) Boiling this down to brass tacks, one president is trying to set up a system of basic health care for the worst-off, while the other orchestrated a highly expert and sophisticated propaganda campaign to justify an insane, disastrous middle eastern bloodbath.
3) Neither treating cancer nor shooting foreigners is inherently fascist, but it should be obvious that Hitler is not notorious for being history's most evil mass-medicator.
That is all.