Well metas can swing it as well. Troll A attributes B isn't much worse than the reverse.
While Troll A attributes B isn't much worse than the reverse, it is worse than the reverse with no benefit - Troll B Attributes A would have 2 more points of Attributes with no drawback whatsoever (the special attribute points from Metatype can be spend on Edge and Magic, but both of those cap at 6, so you'll never spend more than 10 points, or 11 as a Human, and Metatype B gives 11)
I don't disagree with that it almost always is sub optimal in both the short and long term to not take attributes A, and in that specific example it is pointless. The general point is metas though can fluff a lower attribute priority a bit. Elf C attributes D is really 17 points.(the reverse is 16) A in resources can swing a lot of cyber/bioware and karma can bump your dump 1s to 2s. So lets say bump agility to 6, reaction, intuition, charisma to 5 everything else at 1, bump willpower and body to 3 with karma, take some flaws bump the other 2 to 2. So if you were for some reason really focused on getting a lot of ware it can get by. And its not necessarily a bad idea as they priced cyber/bio ware out of the market for most people in many campaigns. What you start with is pretty much what you will end with. This isn't 1e-4e where people actually upgraded their ware in play. Skills are B so they can get good at shooting and talking with ware to back that up.
Would it stand up to my optimizers, probably not, would it fly in a missions campaign sure.