Oh come on, we all know these two things are entirely different. Rafa won't be scraping in enough points at all those hardcourt masters to be #1. But he can certainly dominate the slams again. What if he stands with 3/4 slams in his hands, but Nole has a couple of tournaments like toronto and paris to his name? He'd be a computer #1 just like Federer was this year
Nole was #1 almost constantly this year in the Race. This was reflected in the YE standings. That is because Nole has made a lot of finals this year. If Nadal does the same next year, he may not immediately reach number 1, but will in fact be YE #1, allowing for 1 + 1 to be only 2. Also, it was a bit of a joke, don't take it seriously.