As I stated earlier: That was the initial design behind Ostheer. But now the lategame is mediocre at best. There is no punch in Ostheer armor. Now you lump behind early only to be on par lategame.
Highfive pointed it out: Everything Ostheer does, the Brits do better.
+1. Ost are a reactive faction for the early/mid game which is fine, but when it comes to the latter stages of a game where they are theoretically supposed to be better, they are placed on the back foot again because the power creep of not only the WFA but also brits, who can do what ost do but better.