The number of visits not block me

Hello,
I’m checking the number of visits per product in the section ecommerce and did not seem real .
For example , a product with more than 340 sales have only 50 visits .

Can I know that it is taken into account to measure these visits ?

On the other hand , what is the difference between the registered in the general data and registered in electronic trade if it is an online store visits ?

Thank U