Pharmakeia Robe (15int 8mab) >> Nares body (14int 8mab)
I'd agree with your assumptions except for the last.
Remember nares has a set bonus and head/feet/hands are best in slot. Using Body brings you up to 4/5 and combined that's a better option that Pharma Robe taken by itself.
If folks don't have 4/5 and are building towards that then yes Pharma > Nares in the meantime...