That's correct. The Cent/Compact slide was as short as they could make the gun due to the design of the locking block and the length needed for it to do what they wanted.
That truly surprises me. When I left ('03 I think) the guy in charge of such things was desperate to hit the delete button on the Vertec. If a Cent was made, I've never seen or heard of it and I'm absolutely certain it happened after I left.And I found out yesterday that Beretta made a 92G Vertec Centurion!