I've never thought of anyone here as an "average trainee".
However, I think you're missing the point here Zeb. You're not supposed to train like this everyday, but it's great for strength, and VARIATION!
This is really just a twist on the classic rest/pause principal.
If you use this method of training on a body part, or specific exercise that you may be having difficulty with, I assure you that you will improve, AND see great results.
Even if you work your way up to 7 reps, then back down again. That's almost 50 reps. And, because the rest time is very quick, you are also working at a higher intensity then you normaly might.
I know guys that have been training for years, and still can't do 50 pull ups in under 5 mins. Can you?
Try it with heavy squats, to get the "serious gains" that you're looking for, or dead lifts.
Or, try it at the end of your workout with a finishing exercise with a lighter weight, like mentioned above.
Don't be so quick to dismiss something, just because it's not part of your routine. This site is about learning, and growing.