I see a very nice artistic side to softer Aikido which to me is what its all about. It's practice. an art form. The harder you come in the harder they will go down. In most I can clearly see a deliberate stopping movement particularly in defense against weapons. In reality a sword cut stops a centimeter off the floor, not with outstretched arms in a 'please grab this' action. Its a wonderful art. Even the best sword techniques are defensive taking advantage of a committed attack.
Only an untrained buffel swings a sword like that. In fact, whether in European or Japanese sword arts, strikes are linear in nature and end with the sword in front of the body, generally with the point facing the opponent. Why cut to the ground and leave yourself completely exposed to an after-blow?
Of course, these are generalizations, and technique varies from art to art, and technique to technique. But generally, swords are used in a delicate and intelligent manner. No need to swing them around like clubs; they're plenty sharp enough on their own.