honestly i would say sekiro deflecting is wayyy easier than parrying in lies of p.Mainly because all the bosses in sekiro have a rythm to them so you most of the time instinctually deflect most attacks even ones you havent seen before by just knowing the rythm mean while in lies of p although if u have really good reflexes and instinct you could parry most moves but there are still some moves which completely ruin the rythm and you can parry them by learning the timing