Wow! This is my first time voting in a thunderdome so lets see here...
STORY A:
ENGLISH: If there were any grammatical, spelling, or other english errors I didn't notice. If I missed something in this regard, my apologies.
PLOT: Pretty good. I'm not great in this category myself and certainly now good enough to write a million words about story A's plot, but there's some buildup and what feels like a cliffhanger at the end. Sure, it's a little short, and I would usually advise on spending a lot more time on building a connection with and understanding of the main character and adding more rising action and climax, but there's a word limit so I'm not going to wiegh that when choosing a story.
PROMPT: Story A follows the prompt entirely and without buts, excepts, or anything else that would be, "But maybe this isn't really like the prompt...". 10/10 for this for story A.
CHARACTERS: The main character was good, and the servant dude who was a friend or whatever I already forgot his name was nice but seemed more like something extra that was being used to communicate the main character's condition/thoughts to the reader. Sure, you don't have many words, but maybe comunicate these another way or add more depth to servant dude. The beggar was the only other directly refrenced person in this story unless maybe that servant the main character called to put on their clothes counts, and this is very few characters. Normaly I'd critisize this, but it's a thunderdome no one has more than a few characters in a thunderdome ans still has enough words for a decent story.
ENDING: It wasn't too abrupt wich is immediately a green flag for me (says the person who had a ending way too abrupt in her thunderdome entry). There was buildup to it, but this feels more like the climax than the resolution you would expect. It seems like a cliffhanger, maybe you want to make more after this in a storygame or shortstory, or maybe you left it like this because of the word limit and it was good enough as is.
OTHER / OVERALL: I agree with petros about that part about how unsaid words are bleeding into the main characters lungs as a metaphor or however it went, not only does it need more emotional discription but feeling something like that in your lungs feels more like panic or actual physical pain to me. Maybe severe fear. Maybe one of these emotions is there and I somehow like an idiot missed it, but if it isn't that line really doesn't make sense to me. Anyway, overall, pretty good.
STORY B:
ENGLISH: If there were any grammatical, spelling, or other english errors I didn't notice. If I missed something in this regard, my apologies.
PLOT: We start with no exposition, just go right into it. In story A there was a least a bit of introducing the main character. Anyway, it builds up not very well then ends with Edward killing the king out of the goodness of his heart in a sense and it turns out pointless. I'm going to point out something very obvious to me here: there's practically no emotion. It feels flat, and the characters feel flat. I feel this with a lot of thunderdome's considering how short they are but this is as flat as the paper I draw on. There's attempts at emotion, for example Edward killing the king at the end, but it's just empty. There's not enough description of the characters to hurt from losing the king or to feel Edward's pain when he discovers the king's forces outside and you don't describe the scene of the kings death in enough emotional detail to make up for it.
PROMPT: Story B follows the prompt entirely and without buts, excepts, or anything else that would be, "But maybe this isn't really like the prompt...". Just like story A. And yes, this was copied and pasted because I had the same thoughts and felt lazy.
CHARACTERS: As I said in the plot section, the characters are flat. I really don't have enough to go off of to write much about them. The king obviously wasn't ready to be king in any way and Edward is a nice and loyal guy. No emotion or connection. No more depth to who they are.
ENDING: Again, not too abrupt, but it just feels so flat. I've said this a lot already, yes, but I'm not feeling anything here.
OTHER / OVERALL: Flat, this could be great but it needs more attension to the tension.
I vote story A