Guys, I have good news from Canada. You can see how many seats are reserved (payed for) for each showing in IMAX and AVX theatres. Dark Shadows IMAX which plays at 7:30pm has a total of 10 seats reserved. The Avengers IMAX which follows DS at 10:30pm is almost sold out except for the bad seats in the very front row, but the same thing happened on the first week. I looked at the non-IMAX theatres and the same thing is happening. I am thinking 100$ million for the 2nd week is a lock at this point, maybe even 120 million due to WOM.
I am not worried about DS, more for ppl being hoodwinked and bamboozled by Battleship. MIB3 should be interesting as well. I am not worried about Prometheus though, sadly. It is a niche picture but is sure to be amazing.
I see Avengers doing at best 7 weeks at #1, due to Brave being released on its 8th week. Brave is Pixar and it is pretty much LOTR pixarized. From then on, TA BO will drop immensely, as GI JOE 2 follows the next wk. In July TA may fade into obscurity as TDKR, ASM come out and then in Aug it will disappear completely when Expendables, Total Recall, and Bourne hit.