I might have missed something, but what is the debate about the Walmart tickets? Is it because Walmart didn't sell out but WB still gets to count the box office? If so, i can kind of see it, but to be honest, MOS would have probably made even more money if it hadn't lft the advertising for Walmart and had just had 10 pm and midnight shows like the other movies this summer. I had friends go in to Walmart to buy the tickets (yes, right past the big posters advertising the tickets) and the employees had not what idea what they were asking for.
To me Walmart dropped the ball on selling those tickets. That said our 7pm showing was pretty packed but not as crowded as the Midnight I went back and watched.
I guess what we all want to avoid is the "will there or won't there be a sequel" that happened after SR.
As far as the impact of MU, it has the potential to be huge. Superman is a big name brand and will draw first week sales, as it did with SR, which was doing solid business until Potc: Dead Man's Chest hit the next week and killed its momentum.
So, I am really hoping that MOS can hit some really high numbers before Thursday night just in case.