The stats were for the entire tour, not just the States - 21 Countries and 22 States. If you figure 16 songs per concert (and we know that didn't always happen) that multiplies out to 1,376 performances, so pretty close to the reported 1,332.
The 643,000 seemed a lot to me, but I would guess that was paid admissions. If some or a bunch of tickets were sold to an outfit like Ticketmaster or StubHub, they might not have been able to sell all of their tickets, so . . . . I'm also pretty sure there were some concerts that were totally sold out and every seat taken, but not all of them were from what was said earlier in the threads here.
Personally, I thought the tour was probably a success, but don't know what Mark or anyone else thought.