Not trying to answer for PG, but the reason I think FundersClub is different from other crowdfunding options is that it does NOT result in the company having a large number of inexperienced shareholders. Rather, the company has just one shareholder -- the FundersClub fund. That way the entrepreneurs don't get distracted by having to deal with a ton of individual shareholders -- no updates, no chasing them down for signatures/approvals. The company gets the benefit of a much larger base of capital but only has to deal with one experienced shareholder.
"but only has to deal with one experienced shareholder."
Otoh it also gets a potentially vocal group that can create much noise if they disagree with the actions of the company (and much more quotable by the press for that matter).
