"Born to Die was 2012's fifth best-selling album selling 3.4 million copies worldwide according to the IFPI.[4] As of summer 2013, the album has passed the 4 million mark worldwide."
lol no
by the time ARTPOP will be released BTD will already be at 7 million copies and ARTPOP will do MAYBE 4 million by the time it will be completely forgotten
It doesn't have to, especially since every Gaga album has already outsold BTD, even BTW (the more reasonable comparison you unsurprisingly failed to make).