The main difference is that the Xoom was a Nexus device, and the main bonus of buying a Nexus device is receiving updates right after they get pushed by Google. Not really comparable to any non-Nexus devices.
I think the Razr will get JB, but to be honest I wouldn't expect it this year. The Razr was the best selling android phone for a long time (the G-Nex was returned in record numbers), is still Moto's flagship, and selling well. It's the same situation we had with the ICS update - the devs will deliver far before Verizon does and with a much better product (and we do need to keep in mind that any delays aren't Moto's fault, but Verizon constantly returning builds). But now that we have kexec we really will have no reason to care when the official version comes out.
But to be honest I'm not really sure why people cared before kexec. As soon as ICS came out everyone was looking for a ROM for flash over it anyways.
Come on guys, please be civil. Remember that people are using a keyboard, not their mouth; it is impossible to guage attitude/sarcasm/meaning over the internet. And besides that we are all here for the same reason and with the sames goals, the least we can do is get along.
+1 and furthermore, with Kexec, we won't have the same hackenstein issues we had with the ICS over GB kernel problems because now we can incorporate kernels with our rom builds. So official is kind of a useless value anymore.