Rare was always a second party/tied developer (The had the Donkey Kong license for DKC), which gives them a significant advantage over HVS. Plus, they were developing top tier games for 10 years before the SNES came out.
I think that HVS will never get as successful or popular as Rare was at it's height, but that's not saying anything bad about HVS. If they do a good job on the Conduit and the other two games they could potentially become a major developer, which will be impressive considering they were basically an unknown port-developer two years ago.
Wii has more 20 million sellers than PS3 has 5 million sellers.
Acolyte of Disruption