The setup of the League of Champion's challenge stages was the same as the Order of Magi. So, Jack already knew what to expect from the stages. Even though the monsters were different, the quantity and the grade of the monsters were the same.
Considering Jack was more accustomed to melee fights, he barreled through the stages with more ease. Additionally, his equipment had increased in level compared to yesterday, so the speed he completed each stage was also faster.
Before he knew it, he had burnt through 936 of his challenge points. When he came out of stage 66, he had only 13 challenge points left. He was confident he could complete higher stages, but he had no more challenge points to do it.
His rank was now Primus after passing stage 60. Since he didn't have any more challenge points to proceed, he figured he should just take a look at the exchange list to see what his 2671 glory points could get him.