Ah, the great debate. Mouse and keyboard or controller is a conversation as old as time. For me, the majority of games are far easier to play with a controller whether you're on a PC or consoles. Some games utilize the keyboard better than others, but when it comes to RPGs, you're generally going to want a compact set of controls so you know where everything is at all times and this will make you a better player at these particularly tough RPGs. Plus, controllers have haptic feedback which is something a mouse and keyboard just don't have on offer.