Rage Support and Bleed

We know that bleed gains the most from flat phy damage. It is known that all Add on items or "Adds Physical Damage against Bleeding Enemies" from Double Strike directly affects bleed damage. And how about Rage Support? "Supported Attack" means that Rage only affects the attack, does it include the flat phy directly into the bleed? This is very important information when it comes to Bleed Build.

Yup, added flat phys will affect bleed, and rage stages will multiply it further.

Increases to physical damage do not apply to bleed.
If you're about incr. phys damage taken, I guess it's a different story.

With rage support, it's about "attack damage", which affects any attack damage source your weapon dished out. Bleed included.

ZIGGYD’s 3.0 Damage Over Time Ailments Guide


https://www.youtube.com/watch?v=JqifwelsCQ4
https://docs.google.com/document/d/1-HwTFKDTwzQejkn7fLmqRLcgT3RK8dsI6frS5H2-h_0/edit

Flat phy damage, from Rage will work for bleed. Rage gem has the same description as Chance to Bleed :

"Supported Attacks deal (1-44) to (2-66) added Physical Damage with Weapons"
"Supported Attacks deal (10-29)% more Damage with Bleeding"

Rage:
"Supported Attacks deal (4) to (7) added Physical Damage with Weapons per 10 Rage"
"Supported Attacks deal (39) to (72) added Physical Damage with Weapons while you have at least 10 rage"


so it adds flat damage directly to the attack, so the attack have more base damage then the bleed its calculated from bigger flat, that's why it's work for bleed. Same like work on Chance to Bleed. This is very confusing, but it is a completely different description than pasives like "30% increased Physical Damage with Swords". This Add and Deal makes a difference.