[Mardur]

Here's how weapons affected pet damage on live:

In classic, the weapon's damage had no effect and the pet would get the delay of the weapon given to him. This was obviously overpowered as you could give pets fine steel daggers to considerably lower their delay. This was nerfed but I can't remember if it was before Kunark or not. This classic functionality was never added to P99, although I've bug reported it back when the server opened. Same with Sword of Runes proccing on anything.

After the nerf, the weapon's damage would effect the pet and not the delay. This means that weapons don't really affect high level pets, but could help lower level pets. I'd always buy rusty halberds or whatever for level 1-4 pets for example, as it would allow them to hit for 20s. It's been this way since 2000-2001 to current on live.