Out of 200 odd passports you could have, top 10% is definitely a reasonable definition of most prized.
Particularly when the difference is so insignificant.The vehemence of your disagreement in the original post vastly exceeds what one would expect if you were merely stating that you don't think that one of the most prized should only mean top 10.
The US has 15 countries head of it. Most by 1 or 2 countries. Unless you specifically want to visit one of those 1 or 2 countries the difference is irrelevant. Compared to Sweden the US misses out on Vietnam and Turkey, but gains access to Mongolia.
These numbers could change at any time. So basing your passport decision on such a minute and frequently changing number is ridiculous.
By the way the US is actively working to develop a better relationship with Vietnam--my brother went there on a diplomatic/military relations visit a few years ago, and 90% of Vietnamese have a positive view of the US. It's very likely that sometime in the next year we gain Visa free access.