Basically this is where the challange of the game as portrayed when you're playing and the challange of the game when you're not playing do not match. For example you're playing Mass Effect on easy and curbstomping everyone, yet suddenly when the cut scene starts you're ten times weaker and pinned down all hope lost.
It's a common problem in so many games, yet it's so easy to fix. Simple tracking software could calculate how good you are verse certain opponents, and then use those findings to modify how cutscenes pan out.
It's kinda like ludonarrative dissonance, but too different imo to fall under the same name.