I'm not sure what you're arguing. Nobody is claiming that he didn't win the election. My point was just that /r/the_donald has substantially less than 62MB members so his message had to reach other groups of people.

Similarly, arguing about rally sizes may be a fun political argument but ultimately it comes down to 62M votes for Trump and 65M for Clinton, so it's hard to say there was a huge difference in the number of people who supported each candidate.