They cover ability, knowledge and contacts under one rating. The compresion is meant to save time in gameplay. While this appears to be unbelievable, it isn't. Skill resolution looks like Interlock and works like Sihouette. The difference between the two is called the Outcome.
Outcome is signifigant in certain die rolls, especially in combat.
Combat is the best part of the system, and where the most incredible part of the game's design gets seen. It's assumed that the PCs rock so hard that they'll hit and take down their foes, so what matters is style. While they blaze away I turn on my back, spin around halfway and throw a clip into the airborne gun. The die mechanic requires 2d6. One is a positive interger, and the other is negative.