From the very start of the battle, Roger had no intention of going head-to-head with Arlo and the others.
He was well aware of his strengths and their weaknesses, and although he also longed for a thrilling fight, it was more important to kill the enemy and protect himself!
His continuous pursuit only amplified the anxiety in Joseph and the others, so when Roger finally showed his intentions, it completely triggered their emotions.
Both of them used methods to tap into their potential, Joseph managed alright, but Arlo truly fought as if it were her last battle.
The combat power she now displayed was probably much stronger than in her normal state.
Against such an enemy, even if Roger could win, he would surely pay a heavy price in the end.
Killing Arlo wouldn't mean the end of everything.
Roger guessed he was trapped in the Cursed Land, facing unknown battles and struggling to escape with grave injuries.
His chances of surviving and leaving were extremely low.