
Ok what we see is the most likely win in over-tonnage. More weight means more firepower in the most times and therefore the win. 90 tons more is a full assault mech. But this isn't the point to talk mostly about.
What really annoys that the matchmaking systems fits in 6 CTF's vs 1 CTF on the other side. Yes the CTF is a really popular battlemech. But this doesn't have to translate that such unproportional matchups will happen.
The matchmaking system have to assure that chassis have to be "equaly dropped". In the upper case at least drop 4 vs. 3 CTF's at each side. Secondly is the stacking of same variants. Three CTF 4X and two CTF 3D plus one CTF 1X in one group suck the life out of the enemy group. Plz PGI make sure that only one spawned Battlemech of a special variant is in a team, when puging!
We all are saturated of lances with 3+ Battlemechs of one kind. This is maybee funny for them who drop into this group, but not for the enemys. Plz even if we have to wait a bit longer. But something like the above shouldn't happen.
And to point out what a better drop should look like with said adjustments in the Matchmaking-System i will manipulate the Screenshot, how it could be a better matchup (pic under the text). You could say that the "deafeated"-Team may have a higher ELO, but i doubt it heavly because CFT users with good loadout will know why they are driving this Battle Mech, and are rewarded with good results, in the most cases. Particularly if something like this happens.
I have over 500 games in different CTF's and i guess that I know what i'm talking about. My Elo i think isn't high because i used stock-mechs to get the C-Bill without premium time or any bonus beside cadet. The K/D ratio in the stock-mechs i used to built up the money to get my first owned battlemech are miserable. And after purchase of my first CTF I was killed often, because i had to earn c-bill to just equip loadout in general (weapons) or dhs and endo/ff (internals) to become somewhat competitive. And i'm not done yet beside the fact that i have a CTF-1X, CFT-4X and a CFT-3D in my mechbays, i don't earned enough GXP untill this date, so i only have 2 modules out of 3 unlocked (less than 600 GXP away from my third module to unlock and they arn't updated to second degree). As it stands i have a slight positiv 1,0X+ K/D on all three CTF variants, and those numbers are climbing constantly. I was droped in the "defeated"-Team, and i don't think my ELO is that high to single out, all the other CTF users in the enemy team. Otherwise the matchmaking-systems says I'm the best CTF player out of the 7 CTF drivers and they are bad like hell. And the six who droped in the "winning" are so bad that the "defeated" Team easly would make up the 100 ton gap with skill. This assumption can't be true in my eyes.

TLDR: The matchmaking system worries me. Dropping more than two mechs of a kind should be stoped. And if one team have two mechs form the same kind they should be different variants. If there is one mech in one group in the enemy group should be the same kind of mech as a counterbalance. Weight-differences should be beside of the ELO ratting non existent (in the example it is 10,4%, what adds up to a full assault mech). If the weight would be equal, ELO's would really matter. This mixup in ELO's with compensation on drop-weight suxx. It doesn't show who in general have more skill - It only shows who have more firepower to brawl a mech, which comes around a corner.