Anecdotally, my mom worked for P&G when I was growing up and she said the main difference between the brands was which one was on sale, sold more than the other

Anecdotally, my mom worked for P&G when I was growing up and she said the main difference between the brands was which one was on sale, sold more than the other. In a way the price was the biggest reason for selling toothpaste, not marketing.