It nearly works that way, but not quite. A bunch of weapons have slight differences between their damage to heavy armour, and their damage vs the best shield.
Also, yes, absorbtion shields tend to be the best, but again, not always. Deflection can count for a lot against chainguns, in particular.
Also, yes, absorbtion shields tend to be the best, but again, not always. Deflection can count for a lot against chainguns, in particular.