That is easy. BUSH APPOINTED CONSERVATIVE JUDGES which has ALREADY returned a good decision regarding abortion restrictions. ROMNEY PASSED OVER CONSERVATIVES TIME AND AGAIN TO APPOINT LIBERAL, DEMOCRAT JUDGES.
Any more questions?
So the comparison boils down to:
1) Sustaining the law. Both did it.
2) Opposing embryonic stem cell research. Both did it.
3) Appointing Judges. Bush almost made a bad choice, but public outcry stopped him. Romney made some bad choices, but had limited room for choosing whomever he wanted.
So, for better or for worse, that is the comparison.