@Kayriel You had misspelled my username. I don't care that much, but it didn't trigger a notification.
Anyways, you really misread a lot of what happened. They are in Stage 4. They are NOT in Stage 1. Dawun is a Stage 1 glitch. All of the other survivor humans, however, have presumably progressed through the stages normally and are therefore appropriately leveled. The Gap only exists in a stage that has more than one dungeon. Stage 1 only has one dungeon. They are not currently in Stage 1. Even though Dawun did not know about The Gap before he saw the humans, he did still know that he was in Stage 4.
And to answer your question, compared to other Stage 1 players? Honestly, yeah, kind of. We saw what the members of Dawun's old party were capable of with relative ease. Remember that he was their bag carrier because he had basically zero offensive capabilities. Even now, nothing he has except for his buff affects living enemies. Stone cutting doesn't work on things that are not stone. Again, he has survived through mostly ingenuity and a bit of luck. He drowned his enemies in dirt because he can't fight them conventionally.
I would not be surprised if there were another human who had a skill that allowed them faster speed than Dawun. What happens if that fast person thinks Dawun is an enemy? Slit his throat at best.