My thoughts are that since there is more estimating in this game and tournament rules outlaw using two rulers for triangulation, they've accounted for something I was already thinking of. If I bring my mat that I've played on, I may have already figured out how large certain images are of the distance between landmarks such as stars, so if we played on my mat I would have a serious advantage if ships/squadrons ended up in positions where I don't have to estimate triangulations because I already know exactly where to park my units to be in/out of range depending on my preference.
Equally you could play on all the ffg Mats and work out the distances, I doubt the production generates much difference between mats.