Because Bush is no longer president.
Despite his faults, President Bush refused to ever meet with Yasser Arafat and pulled out of the Durban farce. Even though he (erroneously) advocated a two-state solution and did meet with terrorist in a suit Abbas, he seemed to have a line he would not cross.
Unlike Obama, whose line seems to go the other way - ie most careful of Islam at the expense of Israel.
True the messiah seems willing to crawl to anything low as himself where Bush held standards.