1. Incorrect data.
2. Nothing. But I'm not assuming the ratio would stay the same either.
3. I don't think they are worried, they don't try and correct any misinformation put out there. They have an agreement with their buyers that they will not divulge information. End of.
Why do you think data is incorrect? Do you have the correct data to claim someone's is incorrect? What is incorrect about it? Prices or sold names are not sold or sold ones are not included? If he has about 80 names there and BB claims to sell around 80, it can't be much inaccurate, can it?
If the data is "incorrect" by 20% or so, it won't affect the conclusion that you are protesting. Namely, that only 1 completely made-up no-keyword brand has sold out of 80. Heck, even if he has got half of the names wrong, and it is 1 out of 40, it won't change the conclusion much, will it?
Namely, the conclusion is this:
1. Out of 30,000 names on BB around 25%-30% are not based on any keyword.
2. The chance of keywordless brand being among sold ones is 1.25%-2.5%.
3. Therefore, the chance to sell keywordless brand on BrandBucket is 12-24 times less than other category names (keyword+suffix, keyword+keyword etc.)