I think I get along well with ENTPs as FRIENDS. Why? Because most of these folks are open minded, puns and jokes are inserted in almost every sentence coming out of them, they're always up for anything, and they seem to know about everything. They're like frisky puppies, lack of focus, curious, sniff sniff, bark for attention, growl, chase their own tails, chase the tennis ball, poke the cat, watch and bark at the neighbors, etc., all within like 15 seconds.
However, I notice that ENTPs would not be the folks I would have an in-depth discussion about anything with. They know everything, but they don't know everything about one particular something. They often speak before the right words come to them and they rarely meditate on an idea.
I could be wrong or maybe I haven't met enough ENTP. One of my best friends is INTP (I only recently discovered her type though I have always thought she was an IxTx), and we get along at a more comfortable level for me.
I don't think INTPs don't know or think as much as ENTP do. They are just introverts, they observe, listen, gather and process facts more quietly.