I get less values in the api method that in the site, is this posible?
Example: form the API I get that SO has 709980 questions from site 701005
I see that api/stats is a little ahead of the question count:
api: 710,258 site (logged in): 710,250 site: (not logged in): 703,405
This makes sense to me, none of those counts is completely live, I assume they are cached and regenerated only every so often (every 10 minutes?), to reduce server load. If the api and the site front page are not generated at the same time, then there will always be a small difference between them, with the api or the site higher depending on which one re-gened most recently.