There is no such thing as an honest photography, or an honest frame in a movie. All is reproduction, all is fiction. Whether film or digital, color or B&W, Photoshopped or dodged and burned, we do not even strive for authenticity - we strive instead to match an image that we hold in our minds.
B&W removes all doubt - the viewer is instantly aware that this is not 'real' but is instead telling us something other than 'what it was' at the moment the shutter closed on the scene. Depending upon the level of color, the obvious manipulations, and so on - the viewer may be tempted to believe a color image as a true representation. They will never do so with B&W.
One is not superior to the other - but B&W is no less honest than color - in fact, by informing, it is more honest in that way.
Best Regards, Bill Mattocks