That is true, although some have their little oddities built into the authentic artwork as well. I'm far more willing to trust the validity of a logo grabbed out of a corporate annual report PDF than I would getting it from Brands of the World.
Overall, it reinforces the rule of thumb that any designer should get authentic logo art (along with color specifications and use guidelines) from the company itself rather than trying to circumvent the process by visiting unreliable web sites like Brands of the World. BOTW is, at best, only useful for basic comping purposes. I sure don't recommend it at all for any final artwork meant for production.