Stop panicking. SE will upgrade R/E/M weapons, I suspect by giving them DMG+ augments to negate the sheer difference.
The question should be, WHY are these Skirmish weapons so crazy on the DMG? What is the catch? What is SE planning that allows them to go overboard with numbers like this? This is a game where people pay untold millions of gil and years or playtime for +1% increase in stats, and this is a hundredfold...