Ghost Touch but not, same benefits?

[Kiinyan]

Under the in corporeal subtype on pg 312 of the bestiary it says

Bestiary 312 wrote:

An incorporeal creature is immune to critical hits and precision-based damage (such as sneak attack damage) unless the attacks are made using a weapon with the ghost touch special quality.

Ghost touch says

CRB p470 wrote:

A ghost touch weapon deals damage normally against incorporeal creatures, regardless of its bonus. An incorporeal creature's 50% reduction in damage from corporeal sources does not apply to attacks made against it with ghost touch weapons.

Here's my question: can a barbarian using Ghost Rager

Ghost Rager:

Ultimate Combat 27 wrote:

While raging, the barbarian deals normal damage to incorporeal creatures even when using nonmagical weapons. She also gains a morale bonus to touch AC equal to her saving throw bonus from her superstition rage power.

crit or precision-hit an incorporeal undead? They both ignore any damage penalties, hitting them normally (with nearly the exact same wording), and the incorporeal subtype was written this way before there was any alternative means of ignoring the damage penalty.

On a side note, does an ectoplasmic spell ray have a chance of critically hitting an incorporeal undead?

Ectoplasmic spell:

APG 158 wrote:

An ectoplasmic spell has full effect against incorporeal or ethereal creatures.

[Zenogu]

Looks legit.

I don't think anyone (including the DM) would have much of a problem with you tearing up specters and such