If that is true, why do you thing he has any credibility now? After all, he has said clearly in the past that he will "never waver" on his staunch pro-abort position.
The answer to the question I posed to you is, NO.
In fact it is likely Romney as President, will publicly support the pro-life position, unlike Hillary and Guiliani, who will be publicly pro-choice, and thus Romney is far better for the unborn than they are.