Actually, I believe he'd still only be second. The world record for highest I.Q. was broken recently.
Neat trick. Guinness stopped keeping records of IQs in 1990 because you can't reliably measure them.
And vos Savant was 228 at the time, so she'd have the world record if they were still keeping it (there's an 11-year-old indian girl who made the papers recently but she was listed as 225 -- but frankly, the tests can't really distinguish between scores that close, not really).
As to gaining 30 points in every tournament... er, no. You can gain 20-30 points just by practicing the test or being born in the right country (there are linguistic and cultural biases in the tests) but gain 30-odd points repeatedly by just doing any one thing? No, the brain doesn't work that way.
However, as was proven by the last tournament, Carlsen folds under pressure.
A couple of games doesn't "prove" anything.