This is one of the reasons i love NFL and also NBA. Things about which team is good or bad, can change really quick. In a matter of season or two, you can get from bottom to top and vice versa. In my opinion that is because of salary caps and draft system.

In Europe it's all about the money now days, the more you have, the more you spend and the better you are. Good become even better and the gap is bigger every year. There is no switching about who's on top and it gets a bit boring.