Let`s not be naive - it couldn`t be more obvious that BetFury & Biswap are affiliated (more than that fwiw...) - the fact they deny it doesn`t help credibility, not at all... So yeah, it definitely matters.
I think chances are high that they are related but why not embrace it ? As you say, the confusion around this doesn't help credibility, which is a pity.
The site has greatly been improved the last couple of months, but communication (as always) can be a lot better.