If you read "Steve Rogers: Captain America" the entire thing makes perfect sense.
been that way for a while. Events drive sales, really.
I read marvel through MU so I doesn't really keep up with universe on a monthly basis like I do the DCU.
I don't actually mind event books but they should be something that happens once a year for s line wide event, and supplanted with smaller events like clone conspiracy or the upcoming Superman Reborn.
In theory I feel that the too tier team books should act as an event every month and things such as Justice League, and Avengers should feel exciting. The last few team books that felt like events reading them month to month have been Johns Justice League and Hickamans Avengers and New Avengers books.