Tyrannozor with 4 Mutation vs Brutalisk with Full Symbiote Mastery who gets it?
Tyrannozor has Life Drain and can deal 20% stun to even Giant Units
vs Brutalisks Symbiote deals good damage and provides protection.
Brutalisks before nerfing would stand way better chance.
I tested it once with a friend. If i remember right, Tyrranosor won pretty confidently. Not even with all mutations. But it was in regular co-op, so symbiote did not target the tyrranosor. To test it with symbiote attacking tyrranosor you probably need to do it in some co-op PvP mode.