I misinterpreted, but even for more than one book, 3%, if even for a month on multiple books adds up to a profit regardless. And we both know 3% for one month is an understatement. I doubt a book like Rage of Ultron would've sold as well without Avengers 2 fresh in everyone's mind.
I definitely think the movies do at least keep Avengers in mind among comic readers. It's impossible not to and for better or worse, Marvel thinks that as well. People are subconsciously influenced to buy stuff all the time. You could credit Bendis for making the Avengers more popular again, but it was a different day and age. Adding Wolverine and Spider-man won't sell books like it used to. Heroes vs. heroes are played out. Killing characters doesn't make headlines anymore. Mediocre events don't sell as well (Axis). Just look at who was involved in Infinity and you can understand why it sold so well. Thanos, Avengers, GotG. Familiar properties among comic fans and casuals.
In relation to other titles and compared to where they are now, FF was still selling much better.
I agree, but it's not D list either, though it was heading there fast and the bad reputation of the movie doesn't exactly help that. Although it's arguable how a potentially good movie would've affected it, we can all agree it did no favours.
One could, but it only really matters if people bother to give it a chance. And with the horrors of the movie fresh in everyone's minds, how likely is that? Even among comic readers. It's more of a hook at the moment to see the team join and interact with those outside the FF for now. It might put them on a road to recovering their reputations.