How can you be sure of that if you do not experiment any other tactics?
I don't know about others, but I did. I did it because in most situations I didn't play OKW like many people did: shreck spam => obers => panther(s)/KT => gg. I liked using different units. Tried that after latest patch also and got beaten hard by soviet cheese. So I swiched to solely OKW cheese and it's the only way it works.
As simple as that.
In other words, latest changes didn't do much, but striped OKW from any other way of playing BUT cheese.