Question about multiplayer leveling

So is the leveling system going to be like Call of Duty, which lets you unlock things that make you better in combat the more you play?
Or is the leveling purely aesthetic?

The site makes it seem like you have to unlock new weapons and perk/armor ability type things. Do you?

you unlock weapons but you still need to buy armor like Reach.

And unlock CoD, all the weapons are more than just a reskin.

Yes and no… I believe weapons unlock as you level… But also you earn spartan points which can unlock things like Armour abilities… Im not 100% certain on this

Armor is unlocked automatically as you rank up. Some armor will need you to complete an achievement to unlock.

As you rank up, you will gain Spartan Points. You spend them on Weapons, AAs, Tactical Packages and Support Packages to use.

You can rank up either by playing War Games or Spartan Ops, whichever you prefer.

It doesn’t seem like anybody knows for sure how it works since all three of the other replies say different things. I’d like to know, too, but I haven’t seen anything confirming it to work one way or the other.