Most simulator rides are focusing on workload management skills as well as the ability to learn and be trained. If you can't memorize some pitch and power settings, or take constructive advice how will you fare in training?
Delta's light pen cognitive test is a good test of situational awareness, decision making, and spatial skills. It is not a good indicator of if you can fly an airplane. Most airlines believe they can teach you to fly, but if the ingredients are not there, the cog test can weed it out.