@Rivaille:

What i want to say is that Oda made errors or change his mind regarding the manga but we do not consider that the manga is non-canon so why the same logic is not applied to the databook that Oda approve?
Because that the problem in your reasoning, Oda does approve the databook, Oda does refer to them…so if when the datebook are published the info in it are false why Oda gives is seal of approval? Why Oda who always tell us when something is not canon (Movie Z's marine HQ, the anime...) will let the databooks came out with fake infos? Why he will let the databook mislead us?

For example, is obvious that they asked Oda about certain name but if Oda change his mind when the character is introduced to the manga do we consider this as a error from the databook? For example if Oda change Scopper Gabban name for "Bronze Gabban" later on is that the databook's error? I don't think so.

My point is that at the time when the datebook is release the info in it are legit but Oda can changes his mind (exactly like he often did with the weekly chapters and the volume).
Therefore how can we decide that this info is canon this info is not? We can't.
This is why i consider all the info canon until proven otherwise.

there is a lot of fake info like BB is unbeatable by the 3 admirals when he have only yami yami in the green databook : 3. In the original setting of Blackbeard's Yami Yami no Mi, he was even unbeatable to the three admirals.
…

we seen that he escaped in front of akainu when he has 2 devil fruits and not only the yami yami...

@TLC:

What it IS, is a perfect display on the complete lack of understanding of the subtleties and care Oda gives into his fights as well as a complete lack of respect to the fortitude of the characters in general. I could go into a huge rant on the whole concept of trivializing everything by applying a mix of real world/Dragon Ball logic and sexual bias being absolutely moronic but in your case, I'll handle this from another angle.

If Nami has the time and reaction speed to block Enel's lightning attack, she can dodge an Usopp head shot.

i think oda is talking about men because even bofore the timeskip i didn't see in any moment that nami is stronger than usopp…can nami do the same thing in battle vs luffy?? no nami will be pulverized in one second lol

--- Update From New Post Merge ---

@Castelmore:

"Usopp is the weakest 'cause Oda wants so"… I think it's not always that simple.
Even if he's really the weakest, it's hard to believe. Just look at what he does and at what Nami does... (I'm speaking of pre-flashback)
Seems quite illogical ^^ (It's not an argument that aims at showing that he's not the weakest, i'm just saying that Nami beating him in a fight would REALLY surprise me. But maybe Nami's destructive power is bigger than his, in a big fight with many people, judging from what we saw during the Enies Lobby arc)

if oda didn't consider only men…it's so simple oda said usopp is weaker but never succeded doing that in the manga we are all humans we can be wrong oda never succeded at making nami stronger than usopp because usopp is stronger all peaople see that like this...
that's why i think oda only talking about men in this rank