Throwing 1000MP worth of infantry at a KV8 will also mean a dead KV8 so long as that infantry has any AT capable weaponry, yes. Say, three shrecked Pgren squads. Tasty dead KV8 lunch.
This proves that you have never seen blob of 3 Schrecked PGrens frontally attacking a KV-8...
I can kill a Jagdtiger with 1000 fuel's worth of T-70's, too. Just because you hard counter does not mean you cannot be overwhelmed.
If you blob them and attack it from the front, your T70 will be nice little campfires before you can say "holy sh*t, that was a bad idea", if the JT has a spotter. Which is equivalent to Oz' scenario with MGH + spotting Gren. These T70 only win if you attack from all sides. Which is what should be neccessary when attacking HMGs.
Hell... you proved your own point wrong with your argument...