It's realism rather than sour grapes.
I am not overly worried about standardized test results because, as I said, the fact is that HKers, for example, are not using the greater math acumen that they manage to temporarily cram into their heads for much. There aren't many career options in HK for people who are good at math and science and skills that aren't used are quickly lost. I dare you to stand on the street in HK and ask passersby to solve, say, somewhat basic trig problems or to do a bit of linear algebra for you. Anyone who has been out of school for more than a year or so will not be able to do very much.
The kids here are crammed with math (and other material) so that they can pass exams and get into the "right" schools. It's the same with their piano/violin/etc. lessons and certifications (primarily done to bolster their school admission chances). There's no passion for the subjects as such and those few who are truly passionate about math and science emigrate to the West.
Consumer products are mostly where innovations and new technology developed elsewhere and for other purposes eventually end up, if we're lucky. I do not consider Japan, Korea, and Taiwan to be very innovative countries compared to, say, the USA or UK or Germany.
Here's an example. Remember the earthquake + tsunami + reactor disaster in Japan? Now, remember the robots used to explore the nuclear plant facilities afterwards? They weren't designed or built in Japan. They had to be brought from the United States. If you have a hankering for eerily, uncanny-valley-dwelling fembots and bear-shaped pillows that rub your face to make you stop snoring, though, then Japan is definitely the go-to place.