Yes Xcesss there inherant Acc bonuses on most if not all Interlock abilities still. This fact is being looked at in regards to balance for interlock abilities.
This is a way for player's to find out but I seriously doubt anyone would go through the head ache of doing it.
to accurately gauge accuracy you would need a sample of say 10,000 Speed attacks and record the number of hits this gives you the base line for the speed/style accuracy for a character. Then do the same test but run it against 10,000 uses of the ability you wish to test. compare the number of hits in both cases and the increase % would be the bonus.
And I am not kidding about the 10,000+ samples for the base line and test scenario.
I have the tools to just open the code for the ability and see what it's set for. However my reply was to show how a player could find out for themselves.