Cars in America vs Other Countries?

So me and my friend are having a big Debate over this. He's a big Honda buff and says the S2000 is the greatest car ever made. Yet every single official report online says that the car can only hit 149-157mph top speed. But there's videos of supposedly "stock" s2k's hitting 281kph.

I refuse to believe that a stock s2000 can hit 175 with the standard 2.2l 240hp 4-cylinder engine without any turbos or super charger.

The only thing though, is that the cars in the videos are measured in
Kph so I know they're foreign. Would an s2000 in say Germany be more powerful than one in America at stock?

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