Guild Wars 2

1) Anyone know how much damage the various siege weapons do to other siege weapons and structures? For example, how much damage does a cata do to an arrow cart, to a wall, to a gate, for both fire boulder and fire gravel.

2) Does the amount varies when use against different siege weapons? (My guess is no, but I am not certain)

3) How much hp does each type of siege weapon has?

4) How much Hp does walls and gates have?

5) Does upgrading the wall/gates increase their hp?

Since that no one seems to know the answer to these questions, I did some testing on my own.

Video showing the damage of catapult, trebuchet, arrow cart and ballista on ram and golem.
Test done with 2 ac mastery, 4 cata mastery, 3 treb mastery and 4 ballista mastery.
Estimated ram has ~100k hp +/- 10% by totaling up damage on it.

Siege deal 15% more damage on rams than on golems
Arrow cart dps on Ram: 1155
Ballista dps on ram: 2570
Catapult dps on ram: 482
Trebuchet dps on ram: 2221

Also, I did not record these in a video, you will have to take my word for this :P
Normal gate hp: 375,000 hp (52 hits with superior catapult, 7227 damage per hit)
Normal wall Hp: 450,000 (39 catapult hits, 11566 damage per shot)

Credits to Jeknar from ET for helping build the ram and golem to test on.