Worlds fastest car has never really been a German thing. See for example https://robbreport.com/motors/cars/lists/fastest-cars-in-the...

Well, power at top speed will probably be similar, they don't seem to be too different aerodynamically (maybe the Bugatti has got the edge there, but still, won't be a 2x difference).

The question is also how much power the battery can continuously output, if it's the 3000hp for 15 seconds that won't be of much use for a max speed test.

At that speed the limiting factor likely moves from raw power output to things like cornering ability on the track, grip of the tires, aerodynamics, downforce, driver skill, mechanical linkages, etc.

There's a reason why all the world's land speed records since the 1930s [1] get set at the Bonneville Salt Flats or similar flat desert terrain. FWIW, the speed listed in this article was exceeded in 1937. The hard part is not necessarily going fast, it's going fast in a street-legal vehicle.

[1] https://en.wikipedia.org/wiki/List_of_land_speed_records

The best batteries have like 40 times less energy density than engines running on oil derivatives. Even considering that electrical engines are 90% efficient while combustion engines get like 25% efficiency, that still leaves the factor of 10 for energy density. That implies much bigger weight. And to compensate the engines must be more powerful.