how about you roll it then talk?
I can accept that you say you have seen various cars rolled etc, and anecdotal evidence is always something to be considered. However, since the Sonata is a relatively rare car compared with most, just how many have you actually seen rolled?
As for the brand itself, most of the older Hyundai that I have seen are pretty neglected, and often driven by P platers as a cheap first car. You don't think its got more to do with the lack of maintenance and the skills of the drivers that gets them into trouble in the first place? I would think that gives an older Hyundai a higher chance of being involved in an accident, and therefore a higher chance of you having seen a few rolled?
I challenge your statement that ANCAP ratings mean nothing. They are the industry accepted standard. It kinda reminds me of the old 'GM spends millions on research and development, some guy has a holesaw.. discuss' comment on someones sig in here.. cant remember who. You are saying you know more than the many car companies around the world who spend many millions ensuring their cars are as safe as they can reasonably be, and the independent assessors who test and rate their safety.
Even if in fact the Sonata comes out worse in a rollover ( and I repeat, just how many Sonata rollovers have you actually seen?), rollovers are hardly the most common accident on the road. The Sonata may survive a different impact much better. 4 stars is 4 stars mate, and the ratings aren't pulled out of a hat.
You don't like Hyundais, I get that. Neither do I in the main, they are ugly snotboxes just like WRX's. That doesn't make them death traps.