You only need 1 pak, 2 scout cars can beat 1 AA HT if it is on the move and those scout cars will be uncountered if you do indeed kill the HT. Early Teller mines can totally wreck a USF Player if you spend your first 50 munis on 1 and kill his vehicle.
usually though the AA HT comes at 7 minutes so if they are hitting you at 6 the USF player got a serious map control advantage. Usually as Ostheeer you want to get about 4 squads out + your pios, tech to pak then get another t1 unit or pgs as an initial build. Or you can go scout car first and get the pak later, just don't lose your scout car to the AA HT.
Yea, I like the idea of two scout cars. Like you said, after the ht goes down the usf is almost forced to go t3.
In the game I was referring to I had about 60% map control. I was just amazed how fast it came out. He locked down his fuel choke point and held his fuel while I was capping the other side. I had to watch the replay in order to believe he could get it out so fast. I forgot the map name, maybe la graze (spelling) breakout. After 300 hours I still struggle with Coh2 map names lol.
@OP: Yes, 2 to counter and 1 to push it back, which will be back with higher vet anyway.
Lol, I'm not building 3 paks in a 1v1 to counter a T2 unit. In fact I don't think I've ever built three paks in a 1v1.