222 still is the strongest light vehicles in early game(3-5 minutes).
It need 3 shot from AT or 7-8 shot by T70 or 4x Ptrs salvo to take down.
Its survivalbilty and HP are already good enough.
222 do have a auto cannon that can chase and kill other early vehicles include m20.
Sorry but I doubt you have ever played with 222.
- 222 needs 2 AT gun shots to get destroyed. Only with Vet3 it gets some additional HP to survive 2nd gun shot
- fastest build is 4:40 minutes. (good fuel income, T1 skip)
- Autocannon has pretty low penetration of 35 (vs. AEC 63%, T70 50%, Stuart 44%) with very low damage of 20
It's by far not the strongest LV in early game. You can deal with it with every squad because all weapons can penetrate its armor. And the only LVs you can "chase and kill" are Soviet clown car, Universal Carrier, WC51, M20 and all Halftracks.
But you go high risk if you try to kill USF Flak HT or Soviet ZSU. Most of the times, you loose your 222.
In conclusion, learn your facts.