The double budget rule of thumb for profitability accounts for lesser profits overseas which means Apocalypse most likely is well into the profitable range right now. Obviously this is not an exact thing as marketing costs vary from film to film but in general its close. Still disappointing overall but not a flop.
Tarzan meanwhile flopped overseas. Whereas most movies tend to make more internationally now than domestically Tarzan has made more domestically. Part of that certainly has to do with its not going to play in China which has become the 2nd biggest worldwide market for movies (China only allows a limited number of foreign movies per year and Tarzan didn't make the cut). Yes its only in its 3rd week out but you can project its final box office take based on typical movie patterns so it will top out domestically around 120 million especially as it gets forced out of theaters by big name arrivals in the next few weeks like Star Trek and Suicide Squad. Internationally its pretty much done and will likely top around 100 million. It had a 180 million budget so it needed to come in around 360 million total to break even. Its going to come up well over 100 million short.