McD fries are too soft and when they get cold they are absolute garbage. They almost seem soggy, without getting wet. BK have a crunch to them. At least this is the case in the UK.

Not going to say they're good, but it is wild as fuck how much of a difference franchises can make. There are several BKs in my city, but a select few are owned by a different franchise than the majority of the others. Their food is WAY better, consistently, than the others, and it's usually a lot fresher tasting.