It doesn't help that emotions arnt our Forte, So when we ARE projecting our feelings, it;s not done on purpose, we dont quite understand them, so if we come off too harsh, snappy, mad, angry, excited, proud. It's not done on purpose, and we dont quite "feel" the same way eternally as we do projecting it externally. It's just that we dont understand our limits and overcompensate for it. The term "Go big or go home" I feel most ENTP's can relate to.
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I get what you're saying... I think with me as well, because I don't actually feel strong and intense emotions I will basically subconsciously pick an emotion to display that seems appropriate. So if you see me having an angry rant in an argument, the chances are I am actually not angry at all. I am guessing because of this ENTPs will often appear more up tight about a lot of things than is actually the case.