cleave and hit mass are different things. No matter how much cleave you have - your weapon will bounce off when reaching it’s hit mass limits.
It’s a difference between through how many you can hit and to how many you can deal dmg
So there is +200% cleave blessing, hit 3 enemies and try hitting crusher. You weapon wont go through him. Meaning that you dont deal cleave dmg to other targets because you failed to pass his hit mass.
So hit mass and cleave work together. One decides if your hit will or will not be able to pass through the enemy. The other one decides how many enemies you can hit.
Crushers both have a big hit mass and big cleave limit. He alone counts as several poxwalkers. So with cleave blessing and energized attack you can cleave through ~4 crushers.
Without Sunder blessing on cleave your weapon will go through first crusher, ignoring his hit mass, but due to low cleave it wont deal dmg to other targets.
Without energized attack, that ignores hit mass, your weapon will stop on first crusher no matter how much cleave you have. I tested with max stacks of Wrath blessing, weapon still stops at first crusher with non-energized attack.
Furthermore without Brutal Momentum killing crusher with wide, non-charged, attack means your weapon still bounces off the crusher, stopping it from going further and hitting another one.
But killing crusher with wide, non-charged, attack having Brutal Momentum blessing - means your attack will go through and hit the second crusher. Because you ignored it hit mass.
So energized attack do have increased dmg, cleave and ignore hit mass.
Yes i wasted 8.5k plasteel to get Sunder blessing and tested this all in Meat Grinder. Just to prove a point x)