Several things.
1. None of those are nearly as offensive (Not because of the picture, but because most of them are commentaries on the realities of his actions).
2. None of those involve his family.
3. As far as I can tell, all of those are responses to the many, many blunders that have taken place since he came into office.
4. None of those completely misrepresents Bush; the Saddam imagery is questionable but even it is true, considering Bush is the defacto ruler of Iraq right now.
You're really stretching. You have four blatant misrepresentations of everything Obama stands for before the election has even occurred and they've brought his family into this. It wouldn't be any more appropriate to have a caricature picture of McCain in a nursing home looking disheveled, confused, and having his soiled body cleaned by Cindy.