To promote and sell this sham of a service as 18Mb would be a ripoff of consumers.
This would be like comcast taking their 6/1 tier..raising the price of it to 62.95 and promoting it as 18Mb simply because someone could maybe reach those speeds with powerboost.
Comcast SELLS it as 6/1..and the powerboost is an add on..free feature.
How much more desperate will you get AT&T?
There is nothing wrong with offering it as a powerboost type service to give customers the added speed if it's available. But to price it as a higher tier when you simply cannot guarantee that it will be available if the other services are in use is a scam. -- The Coyote captured the RR! Roadrunner Rick is now Comcastic!
Even if that is true, how is that different from the shared line cable uses? Cable speed has been known (for years) to drop off significantly during times of high use.