I guess you're right, but I still stand by my statement that Blink has a much more dedicated fanbase, who will continue to actually buy their new albums. Green Day's fans are more composed of the people who will download a couple songs they heard on the radio.
Idk about that. I mean, yeah green day has a good amount of fans who probably only know their radio hits, but that probably isn't too big a percentage of their fan base. I'd say a majority of it is people who have been fans for a long time and either don't like the direction of the last couple albums so are not interested in the new material, or perhaps are waiting to decide how they feel about it before picking up a physical copy. I do agree that blink fans are a bit more loyal (as proven by first week sales) but I don't think green days fan base is mostly people who only care for radio hits. Especially since I know a lot of people who have been fans for a long time and never even listen to the radio.
I could be wrong though.