I see BAT as a competitor to AMP. Seems very similar to me. I have used the "brave" browser and it is pretty amazing at blocking ads. I don't see how they plan on using the basic attention token with the browser. As far as i know you can't use BAT with the browser yet. I signed up for "Wildspark" at wildspark.me and i have not been invited so far. I have seen a user walk through of the browser extension and it seemed impressive to me. Extremely user friendly, fast, and simple to use.