Duly noted… So this “giant” carrying a sword large enough that a character can run on the edge of has a neck small enough to be decapitated by said character? I mean, it sounds awesome and I would go along with it too, but “believable”…?
Look, I understand that there are “rules” for realism. However, at my table, playing with my family, I’m the final adjudicator of what is “plausible” in our game. Just like you are at your table. We can play different, I don’t think anyone else will mind.
But, since you’re clearly invested in this topic, let me run this by you specifically. Let’s say a player asks the king for the kingdom. In the GMs head there is practically no chance of this happening, but for grins and giggles he/she calls for a roll. Player gets a nat 20. What do you think about telling the player at that point that he has to convince the king (through roleplay) to give up his crown? In this instance, everything but a 20 would have been a failure and even still the player doesn’t have “automatic success”