John-117 takes this. Fetts gear isn't superior, just more compact. Technically Fett's armor is more durable, but John's gives him more. John also has tracking systems and various detection systems. So Fett isn't hiding either. Not to mention John is a hell of a lot more stealthy than Fett is. Fett may be the best bounty hunter of his era (not saying much), but John is literally a super soldier.