You’re right. Romney would have nominated someone like David Souter to the Supreme Court, and within 3 years Souter would have been writing majority opinions that made Elena Kagan look like Clarence Thomas.
I’ll take the “maybe-lib” over the “sure thing-lib” any day. You can take what you want. As it stands now, we will get the “sure thing-lib(s)” on the Court. Congratulations.