I don't think that is an accurate characterization at all. Looking at the posts above, I'm not sure how you came to that conclusion.
Putting it another way, blur used to be sucky sucky in terms of response on older Droids. Third party launchers were a great improvement in terms of responsiveness and customization.
The new version of blur on the Razr is absolutely lag free. It only lacks in a few areas, like screen numbers, customization, etc. Performance wise, new blur launcher rocks.
My original question was geared toward a level of performance you don't see on other phones. When I mention lag or redraws on the Razr, it is so minor some owners don't see it at all. I wouldn't give up on anything until you've actually tried it.