The second student, trains some artificial techniques (as it was mentioned earlier in this thread, these are just a base for understanding concepts, developing sensitivity, etc, so they need to be refined later with flowing/ dynamic techniques), artificial attacks (no-one ever will attack like that. We all agree on that. I know it is for training but nevertheless, that is the input/experience the body receives), in an artificial way (non fighting, static, no immediate feedback, if he doesn't like the attack he demands ala Jim Carrey to have it made different). Not to mention that he is mostly a non- muscle, non- large, non aggressive person.
Now, if I could choose one of the two to protect me, the choice would be obvious. Don't you think?
First, protect you from what?
Second, this is not a universally accurate description of beginner training in aikido.
Third, remember that uke is learning aikido, too, and one of the things they *should* be learning is how to attack effectively.