There's a difference between judicial review and judicial supremacy. A ruling imposing SSM on America would be judicial supremacy. It should be defied. It would be an unprecedented violation of multiple state constitutions. The court would essentially be invalidating the constitutions of the states. If same-sex marriage was granted by the founders, we would have had it since the 1700s.
I am not sure I would hold SSM to be a Constitutionally protected right if I were on SCOTUS myself. I am not comfortable with aggressive interpretations of Constitutional text, particularly if clearly not the intent of the text when promulgated, which do in fact if abused give the Courts in essence the power to legislate. On the other hand, a situation where a married couple of the same sex could have their marriage dissolved when they move to another state is an intolerable situation from a policy standpoint, and may infringe the constitutional right to travel and relocate.
If the Court doesn't want to overturn
Windsor and
Perry a mere three years after writing them (the same Court with the same membership!), it basically boils down to two options: every state has to recognize same sex marriages but doesn't have to issue them, or every state has to issue them.
Perry has them in this box where a state constitutional ban on same sex marriage is motivated by animus and can be overturned, and if they punt (which they won't do, they chose to take this case) the lower court split between the Sixth Court and the other courts will be an impossible dilemma.
Every state has to recognize but doesn't have to issue will be a ridiculous procedural issue, much cleaner to just rule it legal nationally.