You, along with everyone else knows why. Obama is a democrat, Bush was a republican.
If Romney wins in November, this type of action will be looked at as a brilliant way to deal with the terrorists.
"Wanted dead or alive" doesn't mean "Go kill them".
It means go out and bring them back to stand trial. If they are killed resisting that happens.
Obama isn't giving anyone a chance to be tried. He is just killing them where they stand.
BIG DIFFERENCE.