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Bizarre video of Colin Kaepernick ... who was cornered at an L.A. hotel on Friday and interrogated by some overzealous fans -- who forced the 49ers QB to compare himself to Cam Newton.

Kaep was strollin' through the Ritz-Carlton in shorts and a t-shirt when he was stopped by fans asking for some selfies. One of the fans launched into a quasi-pep talk -- it turned weird.

The fans INSIST Kaep is as great as Cam. Colin's response -- "We ain't the same person."