Yes electric toothbrushes are really better than manual toothbrushes.
The electric toothbrushes do a better job at cleaning your teeth and makes it easier to brush your teeth as well.
You'll get your teeth much cleaner when using an electric toothbrush than using a manual toothbrush.
But even a regular toothbrush can keep your teeth clean and get your teeth clean as long as you brush your teeth long enough and often enough.
But I would highly recommend an electric toothbrush as it will make brushing your teeth much easier and help clean your teeth better.
I switched to using an electric toothbrush 5 years ago and would no longer use a manual toothbrush unless I had no other choice.