In the case of the PSP it has to do with how they enforce the ROF rules. They DO NOT check to see if your gun is shooting 13.33 bps. They randomly check the gap time between any two shots and 13.33 results in a 75 millisecond gap between shots. What the refs are checking is against that number and anything lower than .75 is a penalty. (The old ROF standard was .66)
I assume the MS is doing something similar if not the same, hence the seeming peculiarity of the chosen ROF.
A real rant might be made against the penalties the PSP (at least) has chosen to hand out for ROF violations as in point of fact a single gap violation is not proof of any sort that the marker in question has actually fired more balls in a second than legally allowed because any observation of the gaps between a series a shots shows a measure of randomness up and down. And the reality is virtually every minor infraction penalized is unintentional as well as not being demonstrative of actual rules violation. As a consequence tha vast majority of the ROF penalities assessed are on players trying to abide by the rules. How exactly this is good for paintball I don't know and if more widely understood--oops!--might actually diminish respect for the rules instead of the other way round.
I assume the MS is doing something similar if not the same, hence the seeming peculiarity of the chosen ROF.
A real rant might be made against the penalties the PSP (at least) has chosen to hand out for ROF violations as in point of fact a single gap violation is not proof of any sort that the marker in question has actually fired more balls in a second than legally allowed because any observation of the gaps between a series a shots shows a measure of randomness up and down. And the reality is virtually every minor infraction penalized is unintentional as well as not being demonstrative of actual rules violation. As a consequence tha vast majority of the ROF penalities assessed are on players trying to abide by the rules. How exactly this is good for paintball I don't know and if more widely understood--oops!--might actually diminish respect for the rules instead of the other way round.