It is a very weak argument. Just because Toys R Us does not have any toys, that means merchandise will not sell in WDW? Slap the Disney tag on a Na'vi plush, and the thing will sell. Duffy sells pretty well. Find one at your local Toys R Us lately?
My local Toys R Us does not sell any Twilight Zone toys. So, you can walk into yours and buy a Twilight Zone Tower of Terror model hotel, or action figure? Well gee, golly that must prove Avatar sucks.
Oh and you know, you can also watch the beloved Pirates of the Caribbean on USA Network from time to time, and SPIKE is known to have Star Wars Marathons. I don't think Avatar being shown on FX or TNT or TBS is a knock on it at all. But keep up your weak arguments and hate.