UK vs US girls Is it me or do UK girls fight so much rougher?

So last year up late one night I watched this reality show (unfortunately for the life of me I can't find what it was.) Five Novice mma UK girls travel to LA and fight a US team of novice mma girls. Both teams trained for a week. I was in aww of the UK girls they absolutely dominated and one every single match. 3 of the 5 matches ended with US girls in tears. I am in the US but after watching that I would have trouble debating and may be convinced UK girls might just be the tougher breed. Anyone with me here?