Why am I so weak at 90? Help!

[Mirage]

You're weak because you have 200 less attack and accuracy than you should have at lv 90. This is fixed by skilling up.

I would say this alone has a much larger impact on whatever you're doing than using perle gear vs things that are better than perle.

To put things in perspective, things other players have a 95% hit rate against, you might have 20%. and that's only because it's not possible to have less than 20% regardless of skill level. If it wasn't for that, you might actually have had 5% hit rate. This will always happen if you gain levels without gaining skill up, and it wasn't a big problem before people started leeching.

I know there was people with low levels from level sync, but it was rarely that severe if they made sure to not sync too far down.

Also, get used to not hitting for more than 2-300 damage on mobs (at least outside abyssea), that's just how the game is.