When we say Read & React is a complete offensive system, we should probably clarify what we mean by "complete".
We mean that you can use this offensive system with absolutely any style of play or coaching philosophy you already have in place. We mean it that can be easily customized to take advantage of your team's greatest strengths. We mean that any age group and any skill level can learn and apply it easily to up the quality of their game.
So when we say "complete", we mean it's the only offensive system you'll ever need in your coaching career. Other coaches, after learning the Read & React system, have confessed that they're not even sure how they could create a defense to counteract it - even when they already know the principles behind how the offensive system works!