I don't think there's a difference at this level. Giving the ball away to their attackers surely counts as a dangerous mistake. All it takes is one lapse and you can be in trouble. Just so happens theirs were no threat but someone like De Bruyne is not going to be as forgiving.Alot of people cant seem to distinguish between mistakes and dangerous mistakes.
In terms of dangerous goal conceding mistakes, id take Dier as a safe pair of hands over any other midfielder we have. Thats why hes getting games.
So far he's given the ball away every single game. I hope he improves. Really I do. Otherwise it could cost us.