The differences in the ingredients lists are hilarious (oh and the portion size difference for the drinks).
The calorie difference wasn't as bad as I was expecting. I always forget, because the UK is always making fun of the US for being fat, that they're the fattest people in Europe (well, they trade the title back and forth with the Greeks.)
Wow this was insane. Having lived in both the UK and US, I always felt that there was a difference in portion size. But it's pretty bonkers to see the comparison before me like this.