Quote "is metric measuring more accurate than imperial measuring?"
No, both accuracy and precision will be the same - those are properties of the measurement system, and nothing to do with the units themselves.
Ease of understanding and interpretation is different - a "base 10" metric system is very much easier to work with than the Imperial "base 16" (ounces to pounds), "base 14" (pounds to stone), "base 8" (stones to cwt), etc.
So do you really mean "accuracy" or were you thinking of something else?
Robert