Name the only city in North America that could be told as late as July 2011 that they are getting an NHL team that MUST be up and running for the next season.
As far as the market is concerned, you could announce in the afternoon that the Hammer is getting an NHL team and they'd sell out Copps by puck drop that evening. Obviously MTS is more NHL-ready than Copps, but newly expanded or relocated teams have had worse (temporary) digs than Copps.
For what it's worth, I'm almost certain that if the Coyotes relocate next season it will be to Winnipeg - on balance, Winnipeg is the best option. But if, for example, the NHL needed to relocate two teams next season in short order (a definite possibility), there are at least a few other places that could be ready to go with hosting a team with a couple months notice or even less.