Denis Kelly -
The 15 - 20 techniques would vary according to body type, mentality etc. what works for one person might not work for another. I've heard many people say that Carlson sr only ever taught a few techniques but Just emphasised hard drilling and sparring.
Just to be clear I'm not saying that this is a better way of training. I actually like the idea of a large number of techniques being taught, learned and passed on to the next generation but just observing that learning all those techniques probably isn't necessary if you are mainly focused on being a successful competitor.
I think this hypothetical player forces the rounded player into his or her game and dominates.
At featherweight,I could see these techniques doing it.
1. Guard pull
2. Open guard retention
3. DLR retention
4. DLR side sweep
5. Berimbolo/leg drag
6. Knee slide pass
7. Torrrando pass
8. Far side arm Bar
9. Side control retention
10. One side control choke
11. One back choke
12. Foot lock defense
13. Knee on belly transition
14. One guard for sitting players (lasso, spider, whatever) retention
15. One guard for sitting players sweep
It's not rounded at all and there no defense. But I think this player (purple belt) beats rounded player (purple belt) in a tournament.