Leveling system?

So I was curious as to if 343 has released any information on how the H2 leveling/xp is structured.

They say it works the same as it did in the original Halo 2 but to me it’s a whole new ball game. It’s been taking me 2/5 wins to progress since level 19, currently 25 and it took 5 straight wins on my 24.

Just kind of curious as to what luck everyone else has been having.