Agree with you
Still thought that for some features, Windchill/Catia V5 integration is better than Windchill/Creo ... may be except now the "Option and Variant" Creo 3 integration ....
I assume because maybe there's more big customers with Catia/Windchill
than proE/WIndchill customers which may be comes mainly from Intralink ....
and agree with the fact that
Creo and Windchill product management does not talk each other .....
CAD methology or use cases are not the same in the context of a PLM wide Entreprise integration, that in a strict CAD PDM vaulting. And think that ProE does not take care of that enough ...