This is directed towards Konni:
I would read the article first. He doesn't say that judo is better than karate/aikido or any other martial art. The author, Dave Lowry, just talks about that judo has devised a method of training that you can do hard attacks and still minimize the risk so judokas are more used to applying their techniques full power on an uncooperative person and knowing they can get them to work. He never once stated that aikido can't be trained harder like others, just that judo built in a method specifically for that.