The Centaur 10s crank will give you the closest-to-original performance but the problem areas are all around the width and overall design of the chain.
Whilst the post fromFred above is true insofar as it states that the external dimension of the chain is different, it neglects to say that because of that width difference, in addition to a difference in chain construction, the way that the front derailleur and the chain interact is different.
Occasionally the chain will "ride" or "float" when going from a big chainring to a smaller one, without cleanly engaging the teeth of the chainring. Going "up", there is a problem in that the ramps on the chainrings are designed to engage the outer cage plate of the chain to help it "lift" - the 9s chain does not have flush rivets, they protrude slightly, so the upshift ramps don't work anything like as well - you can mitigate this by also changing the chain to a 10s Ultra Narrow chain and adjusting the FD with great care.
It is not a combination that we would advise, however.
As the main Campagnolo factory-appointed Warranty and Service Centre for the UK, we can assure you that the above answer is correct.