During last several patches OH has benn buffed into cheat-faction.
1. starting MP buff - gave them 1 squad advantage right from the start for the whole game.
2. 222 and 251 buffs turn penals and M3 into shit, that no one uses anymore. And made teching to T3 easier in general
3. T3476 - previously key unit, have been removed from T3 (and from the game). That opened a huge window of oportunities for OH mediums and faction in general. Because one must be an idiot to lose p4 or ostwind only to ATGs on urban maps (most maps). P4 can survive 4 ATG shots - they are invinsible to any midgame unit mix. While the do huge dmg to anything.
4. Tank’s smoke and speed abilities - that allows any noob to save his tanks after careless play. What is the corresponding ability of 3485? There absolutely no ability of any use for 3485.
I can list more things that makes this faction blatantly OP. But not to waste time I say only about 4.
Anyone says to make a game suited for competititve play there must be close to equal oportunities for all sides. Ocf games showed that there is no counterplau vs OH thanks to recent direct and inderect buffs to this faction.
1.They get the same amount of squad as most people on the field.
Ostheer starts with 420mp, Soviets start with 390, USF with 400, Brits with 290 and OKW with 240.
Why does Ostheer get slightly more? Because the T1 buildings is generally expected to be built unless you're going pioneers/ostruppens and MGs only. Soviets generally start with 2-3 Conscripts before transitioning into their buildings which no longer break the bank in fuel and their first squads will reach the field sooner.
2. Not sure where you got the 251 buff from unless you mean flamethrowers, but the 222 has always been a counter to T1, always. You either protect those units from the 222 by using AT grenades, back-teching to ATGs, mines, or rushing out T3 which hardcounters Ostheer light vehicle play
3. Because you have a delusion that the SU-76 sucks I will say it again, Soviet T3 SU-76s do well against enemy armour and can pen them consistently and are cheap to produce. Also T-34 (which can take 4 ATG hits) can arrive around the same time if rushed, though the light vehicles generally do the job in a specific area far better.
4.Not every doctrine has smoke such as the popular Lightning War Doctrine. Bltizkrieg has always been a problem, but hey, even UKF has it and they don't need vet for it on some of the fastest tanks (Comets and Cromwell) in the game. Also smoke and bltiz have steadily gone up in price over the years so it's not as bad as launch.
Furthermore, you forgot to add Ostheer is the easiest faction to squad-wipe against factions that have plentiful AOE weapons.