This was a lucky day for me, with no fee to pay and straight to the final test. It wouldn't be that difficult to pass...
Even if my match-up is with the strongest adventurer in the guild, I probably could beat it up. Still, it wouldn't be that easy as if I was overconfident with my skills, for sure I would make mistakes and end up costing the victory that I could have.
But I do realize that even if I lose, all I need to do is to show that I do have what it takes to become an adventurer. As the point of the fight probably wasn't you could come out as the winner, but to see whether you're strong enough to give the adventurer a challenge.
As that's what I think is the point of this final fight... it would be ridiculous to match up a new guy against some veteran in a fight.