Difference between Rockwell re-branded Cisco switches and IE series switches?

I'm having a problem with some of my manufacturing automation sites consistently buying Rockwell switches and Rockwell botching the configurations and not having latest stable releases on their Cisco re-branded switches. Most recently they dropped in switches that were doing RSTP instead of PVST or RPVST. All of my switching infrastructure runs on RPVST+

Is there really anything better that the Rockwell re-brands do that the Cisco IE series don't?