Those stats might hold regardless, but
to be fair one would expect different voting patterns under the current system, versus a direct popular-vote election, so it's not accurate to say that anyone "won" the popular vote in any US Presidential election, since that wasn't the contest and the fact that it wasn't
affected how voters and candidates behaved. It's like challenging someone to a foot race, losing, and then deciding afterward that you won on "style points" or something. That wasn't the contest, and the other participant might have done things differently under different rules.
The system as it stands makes voting pointless for people who are in districts that reliably go for the "other team". If they could at least influence the Presidential election, more of those voters might show up at the polls. GOTV and other campaign efforts take this into account, which magnifies the effect.