Tying browser usage to intelligence makes as much sense as linking hair color to sleeping habits. No doubt someone will come up with that study at some point too.
So going by this study, a few years back 90% of the world was stupid and suddenly most people smartened up by switching away from IE.
And no, I'm not switching to Opera just because its users were shown to have higher IQ. I'll continue using Chrome and remain stupid.
Give a few Sats