You are correct Matra. The Atlanta Thrashers were a complete joke -- on the ice and off. The only reason their fan support was not a complete and utter outward disaster, is because they were reporting"WNBA style" attendance figures. That means, like the WNBA, they were handing away hundreds (even thousands?) of absolutely free tickets each night. They were also selling thousands of tickets at steeply discounted rates or selling large blocks of discounted tickets to major corporations (most notably Coke-Cola), who would hand them away for free. There is a reason that not even one legitimate ownership group in the entire world came forward to buy them and keep them in Georgia.
Only real difference between and Atlanta and Phoenix is Atlanta's black mayor was happy to let them go -- no bailout from the city. Meanwhile, the taxpayers in Glendale are pretty much paying all the Coyotes financial loses.
To make the argument that Atlanta had solid fan support is silly. Silly beyond believe, regarding the Thrashers (I don't know much about the Flames). Again, if the Thrashers were not handing away free tickets or steeply discounting large blocks (WNBA style) they might've averaged well less than the 10,000 (plus) fans per game they were reporting most nights. Numbers might've been as low as 6,000 to 7,000 per game, sans giveaways?
One thing that can be said, in fairness. Is Atlanta fans never really had the chance, given the fact the team was so bad. One playoff appearance and zero playoff wins in like 11 years (or however long they lasted?).
Another thing that can brought up, is Atlanta, in general, is a very poor sports market. Hawks probably drew just as poorly as the Thrashers at Phillips Arena, although their TV rating were likely much better, considering all the blacks in Georgia. Braves, also, have had attendance issues over the years, even at Playoff time.