Did they hide the samsung brand on the front and had it turned off? I mean most people are aware of the Apple brand and would know it's not and iPad just based on the lack of the apple logo.
Actually there is a lot more that differentiates these two devices even on a first inspection. If I asked you to tell me the brand of two tires with no branding could you tell me which is which? I don't see people talking about bridegstone and Michelin having serious issues.
On a first inspection of the device I'm pretty sure most people wouldn't think they are the same. After turning it on even less. That the samsung looks are inspired by the iPad, I'm sure they would agree but I don't think they would be confused. Most people don't seem confused when buy clothes at Macy's that they are actually the designer equivalent.