I admit that sneak is sometime overpowered in a sense that unrealistic...but not overpowered in a sense that you have a way easyer time with strong enemies...you need to invest more time in those instead of potions and things like that when using sneak. But I realy like the combination of sneak+follower when enemies notice the follower behind me first and come running past me and I kill them while they do that...that's pretty cool and realistic imo.