Banksy and Mr. Brainwash are the same person? convincing insinuation.

We could reasonably say we know nothing about them, since the informations we have on both are spread via the "unsafe media" for excellence, the internet, in which everyone can tell and write everything of fictious about the self. With a fast cross research on their wikipedia pages, their places of birth, ages, etc. are no certain informations and we have no knowledge of anyone having certainty about their distinct identities. The documentary "Exit through the gift shop" filmed by Banksy is all around Thierry Guetta (mr. Brainwash), who has this extrovert personality, the disturbing opposite of Banksy's hiding identity, making him an easy target of critics. The movie is a casuistry of odd gags made by Thyerry, revealing his ignorance on the moral aspect about the history of art. Thierry says at one point in the film-:"Andy Warhol is dead, now it's my time" sentence strangely coinciding with the way he works and also with the sentence on the stone in the gallery we find on banksy's web site:-"The bad artists imitate, the great artists steal.", which we see below.

The piece which, in my baleful opinion,
best conceptualizes both Mr. Brainwash and Banksy's style and  characters

But what most of all suggests me that Mr Brainwash and Banksy are one person is the fact that Mr brainwash totally delegates his work to assistants and collaborators, which would possibly give him the time to act as Banksy. Banksy is also very good at traveling all around the globe without leaving traces, which is an ability we image to be of a more than wealthy and free man. Last but not least is the fact that B. and Mr. B. have both a strong affection on their image, one in the sense of a total protection, the other on a grotesque exaggeration.
If you see the picture taken in the february of this year, showing an unknown street artist's face attributed to Banksy, with a visibly similar eyebrow to mr. Guetta's one, I would exclude to consider that my hypothesis is not taking anywhere, since the time i cannot think of two people having such fame but only one with a brain.