That's not the point. He took advantage of her holding back when she saw him grab the blade like a maniac seeking to die and then attacked out of the blue when she was still within his (now much shorter) distance. Anything goes in a battle to the death, but this poser acts like he's in one, while cynically exploiting the fact that he isn't. The fight should have been paused then and if he insisted on continuing, both combatants should be placed outside of their range and let guy demonstrate those hand-to-hand skills, if he's so keen. Otherwise it's just cheating.
bro she took his weapon and attacked for the shoulder, she went for knocking him out, if she stopped after breaking the weapons I would say you're correct, but his grabbing the sword aimed at him is part of the fight, her asking to surrender after having her sword grabbed is her underestimating who she was fighting. They did good against the tank in making him unable to move, problem here she only destroyed his weapons and he could still fight and made a telegraphed move, she probably was afraid for breaking his arm and he even mentioned that when she took her armor and went all out she acknowledged her resolve.
My issue is Renge and co are Level A adventurers, ie either cream of the crop or close to it. And this is a world where an A rank adventure actually means something. Adventurers imo should be much stronger than knights, who basically can only fight together and against select opponents, while an adventurer would need solo skills, plus have the ability to fight against any wide range of opponents that knights would either not be able to handle or need to gank with numbers. A knight might have some better technique, but a comparable adventurer should be way ahead in terms of powers and everything else but technique. So in that regard, no they weren't an opponent that was that much more skilled let alone had more "experience" then them, and had they won that would hardly be plot armor, it would be called an expected outcome.
But we knew this was going to be the only outcome, as soon romance advancement became a trigger had redline won. As soon as doggo girl staked the match on that I was like no way they win.
but we got the mention that "Guardian" is not just simple knights, they survived a brutal fight against multiple opponents while covering for their main army, it's not something that normal adventurers would do, so yes, they were presented as a team of A LOT MORE experience than Redline, also they were fighting to represent their kingdom, so it was Honor against the doggo confessing so as you say, the outcome was kinda expected.
yes.. and no, adventurers fight monsters and stuff, these guardians guys are a spec-ops military team of highly trained soldiers specialized in fighting and killing PEOPLE. Adventurers can live(and are shown to be) leisurely quest by quest, the military guys don't they train and train and train.
So yes, red line was doomed to fail as even if they're an A team of adventurers but the other guys specializes in destroying intelligent humans/humanoids
I would say that's a good way to see it, but adventurers also go against bandits (if we follow some other series about adventures guild), but yeah these guys were spec-ops military team, so they were more prepared, even the mage girl warned them and Shiro told them to go all out.
But it would be funny if they fight The Catto, as she clearly shares their creed of a fight is serious business, would be kinda funny if she would obliterate them and their resolve fades.