The math provided states the Tome Weapon is within a .6% margin (I'm not certain if you mean better or weaker, though the tone implies that the raid weapon is in favor here). That doesn't sound far off from most other tome-to-raid weapons, and probably about right from Raid-to-Ultimate.
That is wrong again. Raid-to-Ultimate is correct since it's only an increase in Materia. Again you're just assuming.
Also commenting on the
my view on that is it your stats end up the same in the end, it doesn't really matter which piece had what to start with
, again wrong. Last two tiers we ended with 2.47 and 2.48 BiS GCD speed. This tier it's unavoidable due to it being on the Weapon and not interchangeable gear.

Quote Originally Posted by Duskane View Post
There is always relic to back on
they will be better then this tiers weapon anyway by the end
even more so if they let you customize stats + 5 slots
(but MCH has Crit + DH already so not much need to customize)
Just waiting for Relic... So that's how it's supposed to be? Grind weapon > Raid Weapon. Okay.