From what I understand, most ancient and medieval weapons, even bladed weapons, killed with some sort of blunt force trauma instead of slicing and decapitating like in the movies. This lead me to say that whoever strikes the hardest usually wins. Even using the hilt of the blade as a sort of war hammer was pretty common (not to mention that war hammers were a much more popular weapon on the field that we're commonly lead to believe becuase of this). And yes, swords, axes and warhammers were usually made to be as light as possible but that doesnt take away from their effectivness being multiplied by the strength and size of the user.
And yes I believe that you could larp for 5 hours in armor but thats propably nothing like an actual battle situation where being an elegantly trained sowrdsman goes out the door and being and absolute savage brute hammering down on people will put you on top.
About the burials, you're totally right and many men who either who either never saw battle or weren't warriors at all were probably buried with weapons often times weapons and armor were used as some sort of religous garb or displayed the status symbol of the person being burried, particularly with the vikings. But I just think that this is bigger proof that a nomadic and war prone society such as Scythia probably buried anyone important with weapons. https://onlinelibrary.wiley.com/doi/full/10.1002/ajpa.23308
I'm not necessarily discounting the idea of female warriors and I honestly think the Scythians did indeed have some female warriors. Were they actually used on the frontlines or rather as some sort of queens guard? I don't really know. But I think you should be skeptical with stories like these- partially because reddit and many socially conscious academics get a hard on when something comes out that seems to flip history and common knowledge, partially because we concretely know that the vast majority of warriors throughout history were and are men- probably because they're naturally stronger and far more dependable/intimidating on the battlefield, and partiallly just from logic and experience- Ronda Roussey is an amazing fighter who has dedicated her life to training and sh'ed unfortunately likely get crunched any of the most mediocre male fighters. Doen't make sense for an ancient society to risk all that in a life or death battle.
But hey I could be totally wrong, we're basing most of this stuff off of 2500 year old bones and artifacts found in some pit in Russia and I don't think we'll ever be able to understand all the nuances of these people's lives.