Odd that starting with 2e would a larger cohort than from better selling editions. But OK.1E way outsold 2E, and Basic way outsold both. The numbers that have made it out suggest that 3E, 3.5 and 4E did not outdonthem...but 5E has done huge numbers.
Crawford did say recently thst until a few years ago, moat customers had started with 2E, however, so there might be a disconnect between books sold and when people were playing (lots of second hand copies, or piracy spreading 2E on the early Net?).