I don’t think you can think about it that way.
It’s always a shame when a particular title cannot find enough of an audience and goes away. But that’s Darwinism in work. You take your best shot, you play the game as well as you can, and then it either works or it doesn’t.
It’s not the fault of some other title that your title didn’t sell well enough. That’s a mistake that people often make. If all of the X-MEN books disappeared tomorrow, that doesn’t mean that the sales of AVENGERS or BATMAN would skyrocket. Maybe you’d see some sight increase, but most of the people buying and reading X-MEN would simply spend that time and money on something else–and not necessarily another comic book.
There are certainly books that I look at and shake my head a little bit on in terms of why they perform at the level that they do. But the answer is that somebody, a lot of somebodys, likes them and buys them. Not every comic is for every reader, so expecting to love everything that’s popular is unrealistic. And none of those books is somehow tricking people into ignoring my wonderful gem of a title in favor of their ugly, vapid material–that’s just not how it works.