It's more proper to compare 2 persons with the same skill level. You have 2 arms and 2 legs. Your opponent also has 2 arms and 2 legs. Trying to assume that you can take your opponent down whenever that you want to (or the other way around) is not realistic IMO.
A friend of mine had made public statement that if anybody could take him down even once (when he plays 100% defense), he would give that person a black belt. He had just had his 70 years old birthday not too long ago. So far nobody had ever received a black belt from him through that short cut yet.