I would characterize Ant-Man as a misfire to be honest - it's performance is on par to what I expected, but given the Marvel brand, expectations were higher for many. I don't think it's going to have a good multiplier but I could be wrong.
I wish that BOM still posted screen counts (rather than just theatre counts) after the actuals are in. My local 13 screen multiplex only had Ant-man on two screens (with a total of 9 screenings), an IMAX screen and a VIP screen (basically a section of the theatre that you have to be 19+ to attend). IMAX tickets are $19. VIP tickets are $24. Not exactly family or casual moviegoer friendly.
On the other hand, Minions has 3 screens and 15 showing at the same theatre (including a 2D showing for $12). Avengers had at least 4 screens (maybe 5) back in May.