How does primary skills affect the game?

[willzay82]

Other than giving a guess at where a fighter is at each level? How does primary's affect actual matches. Does having a higher boxing primary give you an edge over your opponent and say you have high bjj primary but low submission? does the primary still make the fighter good on the ground?

[Antary]

Nobody really knows for sure, it's been kept a secret by the dev. My guess is that every action is based on a specific combination of Primary+Secondary+Physical, which are either averaged out or combined as a modifier or the target number for a random dice roll, and then compared to the target's defense, also composed of Primary+Secondary+Physical and rolled. It could be that they all add equal amounts to the roll, or that Primaries add more than Secondaries and Physicals, or any number of things. It's very much unclear and we can only guess.