The thing you have to consider as well though, to have an unstoppable inside game you have to be at least 1-2 rating levels above the norm on offensive flow. take for example a team i just played. Rocket science. number one in my league II.1. I beat them because i had decent enough ID but i absolutely killed them on the perimeter. So because their team was geared towards inside offense they were geared to be way better on Inside defense and i exploited that and beat them with a R&G. In order to progress through a league you need to be adequate both inside and out, and use the right tactics to exploit the other teams weakness.