Okay, but your % chance of winning against a random hand will be much higher than the actual chance of winning against an opponent who has voluntarily put money into the pot (presumably with a better than average hand).

This tool is really designed to answer whether a call of an all in bet is mathematically correct. So you go back and analyse the decisions you have made previously, to decide if they were correct.

It won't help you in a game, unless you can guess what your opponents likely hands are.