Wintergrasp (epic bg version) was introduced almost 2 years ago.
I have about a 90% win rate on defense on both factions. About a 10% win rate on offense on both factions.
Blizzard has made 0 effort to balance this map between offense and defense. Zero. Effort.
They could reduce tank damage to players. They could reduce cannon damage to tanks. They could reduce wall hp.
They don’t don’t bother. Just like how they don’t bother to ban bots. It’s pretty obvious that they just want to work on other games.