Thge problem wasn't that it countered all infantry. The problem was it was wiping squads far too easily. It should definitely be a counter to infantry but not some big AUTO INF DELETE button.
Did you ever play against it?
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Yep, played against it couple of times. Then KV-8 wipes out my squads or flank my pak - it was all my mistakes in game or greed for ammo(usually cover sides with mines). My point is, the KV-8 hit the field in 9 CP, the only the l2p guys and pro levels of spam don't have any units to delay time and THEN kill it.