Practicing Jujutsu kata is no different than practicing self-defense. You would not attempt a hip throw if you were too close and your opponent was leaning backward or Osoto-gari if you were too far and could not reach his leg. This is perfected in our kata when practiced correctly. Therefore, the imaginary opponent is the same as in karate, as it relates to size and the assumption of correct distance. A warrior should be able to adjust in battle.
Proper adjustment is as much a part of training as the waza itself.
Knowing your limitations as well as your capabilities is possibly even more important, as it is absolutely key in any confrontation. Don t get me wrong, I m not knocking Iai-do, I m only stating the difference between the two. Each has its own purpose or goal, but the fact remains that they are different. In summary, kata is a method of training in a particular martial art, consisting of prearranged selected techniques of the ryu, performed in a set sequence, to assist one in accomplishing the ultimate goal of any martial art. That goal is, to defend oneself in an effective manner against an armed or unarmed adversary as well as multiple opponents.