IM3 came right after TA, riding its coattails. It also featured, well... Iron Man, who is the most popular Avenger, especially in Asian countries. CA2 came last of the three Phase 3 movies and also suffered from the bad reception of TFA. And featuring a patriotic type of character. Cap did very well on his own though, opened a good amount over the first and having pretty good legs too. And I think of the 3 superheroes movies thus far, it still has the highest gross in HK (helped by weaker competitions it seems, but still)Besides, for all the hate IM3 gets, audience OS no doubt liked it. It opened well and had good legs in many countries.