Before Hop's answer, let's clear up who these guys are from Hop's experience with both series. The protagonist of Furi is a lethal killing machine, capable of continuous combat and same insane feats for a thing his size. Samurai Jack is powerful, highly trained worldly warrior that has fought similar foes and overcome them. The same entities Jack has beaten time and again, so has Rider. The scale of their stories ends in a similar way, too, b0ss. World-ending threats and numerous trials, including learning from their own failures and challenges.
So on one paw, where Jack is the winner, Hop thinks it would come down to the variety of superhuman abilities and niche combat skills/experience he has gained throughout the series. It's too much from a singular foe, because Jack can be nearly all these things at once. Several gimmicks, some of which no Rider may have ever seen before. The problem here is the setting. Jack does not have prep time, knowledge of his foe or a known back-up plan, such as retreating/hiding to buy time or an ally. All his wild cards are highly unlikely to matter in this scenario. He has similar stats, strong will power, experience and training most people, heck, most soldiers and martial artists in the real world don't.
If considering if Rider will win, Hop has this to say. Rider has fought those exceeding Jack's own stats. Rider has fought and defeated those he lost to, with minimal improvement. The enemies he faced in Furi are more exceptional than Jack's teachers, half of his own enemies & Jack's power early in the series. Rider simply can walk into this fight blind, learn from his opponent as he goes and overcome Jack in a battle of attrition. On that note, Rider basically fought nonstop, with only moments long breaks between intense life-or-death fights. His whole game is a boss rush, there are no pushovers he encounters. Oh yeah and he has a gun. Something his opponent has seen before, but hey, ranged options are better than no ranged options. which may be best if saved for last.
What Hop thinks is the real answer is this: Rider gets Hop's vote, although it will be with some difficulty and a long fight. In the rare case the fight is short and decisive, it isn't exactly a stomp, but Rider also wins here.
Why: So how does Hop decide who wins in this scene? The gameplay and narrative of Furi suggest Rider is elite and direct in combat. Jack cannot afford one mistake. Jack won't live past multiple. Rider is a threat who is constantly at the top of his game until he is fully immobile and defeated. Jack is still human is just more human and that is why he won't win here. Rider really isn't. Additionally, Rider cannot be talked out of his mission. Jack could be. Jack may even hold back briefly. Rider will not be as generous. Jack will wear out. Wounds and time will effect him greater than his opponent. All his experience can't overcome raw AP nor a mirror of himself with a longer timer on his fight meter.
anyway thanks for reading b0ss, bye! bye bye!