My source is not exactly the most reliable...an american youtube video comparing katana and longsword...you know what? scratch that 'realism' thing.
Thing is, it is still too expensive for what it is. Actually, HBS is now worth more than the top tier greatswords, seing how many people want to trade it .
I'll be looking at facts. Fact is, katana is not balanced compared to HBS. If you do not agree, then you can't judge properly.