Polybian triari weaker than camillian triari?

[ooji]

While browsing through unit stats, I noticed that polybian triari actually has less armor and defence skill and looser formation. Dropping their armor might have made them more versatile, I thought. But there doesn't seem to be any major differences in stamina either. Is this nerf in triari compensated by the buff in hastati and principles?

[Ownager]

I think it has some historical reason, but I forgot. They do have more morale. I think the drop was something to do with the Carthaginian wars, as the wealthy Triarii began to mix with the Principes and Hastati due to lack of men. Or was that the Marian reforms?

[Glaive]

I think the drop was something to do with the Carthaginian wars, as the wealthy Triarii began to mix with the Principes and Hastati due to lack of men.

I believe that this is also the reason.