Claymore

[oyabun]

I wonder how will they survive the upcoming battle. They seem to be overpowered by duff and Riful. Guess there's no choice but to run

[complich8]

don't you know the laws of anime?

If they're stronger than you, they're faster than you. Thus, if you're outmatched, you have no ability to run away. The only time, therefore, that running away in anime is feasible is when you're outnumbered by a large group of opponents who are all slightly weaker than you.

Claymore is no different. Ophelia was stronger than Clare. Thus, she was also faster than Clare, and caught up to her easily.

Or, to put it another way, the only way they're going to get out alive is if they survive Duff and then the overwhelming Riful lets them go.