SWAT Perfection + Rampage..Did I Get Ranked Wrong?

So, I was in Onyx before. Now in platinum. Didn’t feel too annoyed…but then after I got diamond in everything else and onyx in team arena, I wanted to get out of platinum.
So I played on game.
Screenshot
I got a perfection along with 1 or 2 overkills.
So…I feel like I was ranked wrong xD

Congrats on your perfection medal.

> 2533274803562826;2:
> Congrats on your perfection medal.

First one in Halo 5.
Was shaking so much too xD

> 2533274924290830;3:
> > 2533274803562826;2:
> > Congrats on your perfection medal.
>
>
> First one in Halo 5.
> Was shaking so much too xD

Don’t think iv seen anyone else get a perfection in Halo 5 yet

I got one in slayer. 17-0

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> I got one in slayer. 17-0

I aint the best at slayer, not a clue why I got into diamond, never mind diamond 4!

They adjusted the curve so not everyone would get into diamond/Onyx right away. Obviously, they put it on a little too heavy.