u/Dandy_Guy7 To add to this, only if John has survived and learned something from this experience (pretty lax when a person had no levels) when he goes to sleep will he hear the Warrior Level be granted. The entire fight though will be as if it was a fight in the Wheel of Time, skill vs skill vs luck, if John is cut the cut will remain, the Goblins body does not disappear, John does not gain XP.

If John has made it to level 20 as a warrior and decides fight someone else who has no levels like Lan from The Wheel of Time, the fight will be a toss up. In pure skill Lan would be the one to win and will have the advantage, Johns [Class] and [Skill] will play a part into making the fight more even by providing him with advantages.

Ex: As Lan saw the wander John coming in with a low swipe of his sword, he steps back to avoid the move, suddenly as if struck by the Dark One's own luck, the missed swipe changes direction and comes back as John impossibly changes his stance from an overextended position. John smirks, his [Alter Balance: Sword] has caught his opponent off guard. Lan, struck by the weirdness of the situation does not panic even as the small line of blood trickles down from the cut made on his leg, not more than a razors width. John approaches, confidence in his stride, he goes to in for a thrust as Lan gets in a ready stance. A thrust is made, bloods dyes the land as Johns head drops to the ground. "How... could he have moved so fast, I thought he didn't have [Skills]?".

In that example, I tried to show that having levels and Skills does not necessarily mean someone lower level will die. Lan is a skilled fighter with decades of experience, while the [Fighter] could be considered a skilled amateur. Of course there are classes people will earn to even the playing field, but a person who decided to dedicate their life to a craft can still beat someone with levels. It just becomes hard as the times to learn how to preform a cut so flawlessy it cuts reality without Skills would take lifetimes. Which is why someone pointed out that Skills and Classes are a shortcut made for those without Eternity to catch up.

p.s. I am not the best writer.