KFC vs McDonald’s

So KFC is massively more expensive than McDonald’s - maybe more marked because we only use a 1.99 voucher and KFC don’t seem to do that.

But WHY is it more expensive?

I tell myself it’s because it’s much better quality, but is that really true or am I kidding myself and actually it’s all the same junk food stuff.

I’d be interested to hear everyone’s thoughts.

Thanks