Pyre bug?

[Robsta43]

I've run into a bug with the skill pyre (at least I think it is). The skill, and skills based off of it, have a tendency to 1shot every enemy in the game except Ordrak (which it kills in about 4 hits).
Let me explain a little of the situation leading up to finding this bug.
A friend and I recently got Torchlight as a bonus for pre ordering torchlight 2 on steam (last week), during playing we both added Jericho's class expansion mod. I also got the respeck mod and the textures mod, while he used the console to respeck his character, all of which happened before either of us tried the skill pyro.
Then his alchemist (on hard mode) tried the skill pyro and 1shot Big, Green and Dead all over (Thrall). Not having ever fought thrall before, or realizing that pyro probably shouldn't have 1shot him, he continued using the skill 1shotting every other enemy in the game, be they troll, unique or boss, except Ordrak, which he 4 hit.
I, having only talked to him online about it up to that point, and having to see this skill in action to believe it started an alchemist on easy (to get the achievements for beating the game in 3hrs), I got the skill before Medea, and 1hit everything from then on out with it. Against ordrak I didn't waste any time and just threw a whole bunch of death at him at once (about 4 bombs and 2 strikes before I even checked to see if I damaged him). Sure enough ordrak died instantly. I used approximatly 4 magic 1 defense in my build and was level 27 when I killed ordrak. My gear was mostly uniques, nothing extremely good and focused on getting +pet stuff because I was mainly a summoner.
After this we both downloaded and started using the gold sharing mod, the additional venders mod and the monster hunter mod.
Then we both made assassins (from the Jerhico pack). Both playing on hard mode. He told me his firebomb skill was pretty deadly and 1hit stuff as well, so I decided to follow suit and test if it was as overpowered/broken as pyro seemed to be. I decided to put 1 point in it to see if it was indeed broken. When I tested it (against unique tree guys in levels 10-16 of the main dungeon cause they were what was strongest nearby). I killed them with 1 bomb, though not immediately as before, I would deal OK initial damage then a string of critical hits for minor damage so fast the text pretty much looked like it was growing upwards they were so fast. This was with something like a 10% crit rate. This is a skill that says it does 19-75 damage, deals 15 damage for 3 seconds and has 100% chance to burn the target. It also doesn't scale off anything.

Is pyro/firebomb supposed to 1hit everything? Is there a way to fix it? Should we just ignore it and not use pyro?

[TheBatotot]

pyre shouldn't be able to do this. it is probably a bug introduced by the multiple mods or a hidden "intended glitch" in the mods that you are using