As a profession in the Hardwood business, who does not even know of this product, I hate to say you are wrong. People do their " homework ' on the internet, and are so confused but can't conclude that. Maybe not your situation, but education here was definitely lacking. Any real professional see's this alot and knows of the limitations very well.
First of all, hardness for a particular species has nothing to do with how it may or may not scratch. That is a finish issue. BUT, like a Black car that shows dents and dust more than say a beige car, you were either mislead and or did not do you own due dilligence. Brazilian Cherry is 1- Dark, 2 Red, and 3- has little to NO grain compared to Oak. Your same complaint is common with Maple for 2 of the same reasons. Oak, with the inherent graining characteristics HIDES alot ! Apples to Oranges comparrison you are making I hate to point out.
The setter may have mislead you, but you dod nit do reasonabkle homework. This is common knowledge and is easily discovered on the web. Harder is not better when it comes to scratches. Color, Texture ( or apparent graining 0 and gloss levels are FAR more important when that characteristic is important.
Sorry to be educating you this late in the game.