IMHO it best to, ..We have weighed same lengh vanes from different manufacturers and they can vary 4-5 grain differance between the two...interestingly enough same vanes from same companies can vary by color also...white being the lightest..
different manufacturer vanes also vary in stiffness from the vert soft to very stiff...
hmmmm that sounded like a Viagra ad...lol
Having said that if your bow is well tuned it should fly the same.
.. but in Achery consistantcy is arcuracy...
Neil