Old Gen vs New Gen
The Blade family was known as the strongest family in existence. Honestly, through all the experiences Quinn had, he would certainly agree. However, Sil, one of the strongest Blades, was on his side.
This was because Sil was able to control six different abilities, and quite frankly, depending on what abilities Sil held at the time, there stood a chance that even Quinn wouldn't be a match for him. On top of that, Sill had even unlocked his soul weapon.
That was something that none of the Blades could do in the past. The soul weapon allowed Sil to use abilities he encountered, even if he faced it just once. He could then select them as he wished. It allowed him to be versatile, changing abilities depending on who they met, and it also got rid of their one weakness: one needed other ability users around them to fight.