By what I"ve seen thus far:
Clans are supposed to have the advantage at range while being bad at brawling (unless the variant is made specifically for it). This is not the case. Clans are fantastic at all ranges while having more overall firepower. What we should see is the Clans doing max dps at around 500-600 meters, and that damage still being somewhat limited against more than one target at a time.
Clan LRMs seem to be superior to normal LRMs in every way. Targeting computers are almost useless or not yet implemented. C-PPCs and ACs are the Clans' largest shortcomings (along with mediocre speed), but their sheer firepower and seemingly greater armor more than makes up for that.
IS Mechs are supposed to be better at brawling, speed, or armor. Instead I'm seeing that IS Mechs only have a speed advantage. Atlai are a joke when they should be pretty damn fearsome. Any Assault Mech should be fearsome, as a matter of fact. Mediums and Lights should be good at running away from and distracting Clanners, while Heavies should be the DPS boats.
Instead, I'm seeing Mediums as flies for the Clans to swat at, Lights as the IS' greatest advantage (speed and firepower in a glass cannon-y package), Heavies as inferior, and Assaults as a 5-second damage sponge.
Currently, IS Tech has no hope of beating the Clans. The odds in MWO are better than in, say, MW2 or MW4, but the game isn't quite balanced out.
Edited by Pezzer, 12 June 2014 - 02:23 PM.