A possible Rainbow Dash victory over Gilda from Fallout: Equestria by Kkat. Honestly, this is the outcome I would expect. Who besides Gilda would be so bold and so foolish as to challenge Rainbow Dash to solo combat?
Mare of the Ministry of Awesome's Request fav.me/d6jza68
Gilda victory: fav.me/d6pp387
I have also seen the Gilda victory but didn't want to post there since the picture kinda twists my innards, G had some respect for dash and their history maybe not friendship anymore but respect that went so far that she agreed to perform their old cheer before the fight started, personally i can't see her beheading her corpse without showing some serious self hate for it, maybe not feelings so strong like in the dash victory picture but i am sure she still would show some sign of regret.
As for story rambling:
I have always been on the side of those who say Dash walked of that encounter alive.
FoE had this worst fate but chance of salvation in the future thing going for almost all the story characters. As for the story, if gilda would have won, the enclave would never have stopped to brag about that kill and would probably have gotten into the spp hub. There also woldn't be much fuss about the dashite movement, they would have used the information of her death to demoralize everyone who still had loyalty for her, probably even conserved her body just to show it off.
So in my headcanon she made it out of that encounter, her story could have continued like the story of the burnt man with the salvation ending (FO:NV-HH) or something else. After that hollow victory she probably would have realized that her fight is over. She may left the forming enclave in the first place to prevent a civil war in the skies, so short after the bombs an such war would have reduced the chance of survival above the clouds to 0 since they would have fought and eventually destroyed the last usable structures they had, this time pony against pony.
So what happened to her after the fight is open but as for (my) logical and probably a little bit of emotional reasons i kind of reject the outcome where she lost the fight against G.
Lovely idea. Still, the show-like style doesn't fit for Fo:E to me. It's just too rainbow and shiny for me. I believe there would be more debris, bruises and scorched earth - there practically nothing happened. Only Dash ruined her mane a bit. Nothing a comb wouldn't fix in two minutes.
Apart of style, it's perfect. Cheers
But Dash is the best aerial combatant in all of Equestria, possibly all the world. Even when she is weakened, is Gilda a match for her?
I think the power armor in this case provides a significant advantage. I kind of see this as Rainbow being semi-emotional over the crushing reality that Equestria is dead and gone, and now she's killed one of her earliest friends. I'm going to assume that circumstances dictate no alternative to fighting it out, which makes it sadder still...