I've seen mention of the hammers detonating earlier than they're supposed to. If this is true and the hammers have always been this way, the increased explosion radius and increased number of hammers perk may not have needed to get nerfed. Cauterize was an acceptable and expected change. Reduction is Sunstrike's burn dmg was unnecessary. How often were they gonna land a punch that wouldn't have killed you? That's IF they got the chance to land a punch without dying. The dmg reduction being toned down was expected. It's in line with Arc Blade, Stormtrance and Radiance now, which is a good thing.