Pretty much marketing. All you really want is toothpaste with fluoride in it. Past that, all things being equal, you’re fine.
With that said, sometimes things aren’t equal and the harsh abrasives in, for example, whitening toothpaste, might harm your teeth. The TL;DR: as always is you should talk to your dentist about dental care.
**EDIT** to add more marketing: you’re probably using 3-4 times more toothpaste than you need. The pictures on the box and in ads show _waaaay_ too much toothpaste.
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