What do you think which is better inside sales vs outside sales?

In my opanion,

Inside sales and outside sales are the same thing. Both have the same goal (to generate more revenue), but their approaches are very different.

Your sales team will look, work, and perform differently depending on your industry, product, pricing strategy, target customer, and other factors. As a result, when asked to define inside sales vs. outside sales, the answer will almost certainly be subjective.