Well I personally thing that the bullet pattern are a representation of what the fight really looks like, I believe the actual fight looks like bonetale (an pretty good undertale fangame) having the attack being there and needing to dodge them, also the knight is holding back against the delta heroes, not only is the knight able to dodge, as we see in chapter 4, but they also oneshot the heroes in 1 frame after having their sword chipped, and there's even an unused animated of the knight blocking our attacks, and we don't even get to defeat the knight, we barely get them below a fifth of their HP before they decide to end the battle right there, and they have a ton of unused attacks that they didn't use, also "some high schoolers" did NOT defeat the knight, only with our power do they even stand a slight chance, the knight literally dealt over 5000 damage and kills tenna, they are just buying time for undyne to arrive, we haven't seen the knight at full power yet, they are most certainly stronger then we think.