My observation

Noted for 2 G ATM, that Tigrex's so called "physical" attacks such as it's charge, and lunges are not quite physical in elemental affinity after all.
Some attacks however are the opposite, herein I am pointing out those I have observed.

Tigrex
On some runs with friends for sizes, I noted tha ol' rex was dealing significantly different damage to players with defence values similar to each another. roused for the truth, I tried armours with different sets, same defence. Most remain unchanged in damage recieved.. Then it hit me.. resistance played a role in those physical attacks.. I bet my money on dragon and wham.. I hit the spot.

My observations are that dragon resistance shaved off a good amount of damage from tigrex's charge attacks which previously was assumed to be plain physical... with a mere 15 points.. I see significant difference in damage recieved.. then I switched to 20% from 75 points of damage(1/2 at maxed HP) at fury(high guild, 6*) the damage dropped to merely 50~55 points, making it less dangerous to get hit.

Surely not getting hit should be the rule of thumb where possible, but I think it might apply where one would care if the damage would kill.


Khezu
In 2G, Khezu had a number of new tricks, where previously I singled out Tigrex's physical attacks to be mostly dragon in nature, in the the case fo Khezu, it's different.
One of the new moves, an electrified body tackle is completely physical in nature. Luckily for us hunters, it is easy to see the move coming thus posing little to no threat whatsoever.


Teo
The explosion attacks which this bad boy uses looks like it's fire in nature, however it is completely physical. It's charge attacks, tail swipes are dragon in nature.
Edited for literancy,
added khezu
added Teo

That is useful, thx for the info.

wow i wonder how many other monsters actuly use dragon type attacks

Great observation im glad you noticed this, i'll definitely bare this in mind from now on with Tigrex, maybe it'll save us from his snap then charge combo
The only monster I've ever really element defended on are Khezu, Rathalos and Ucamulbas.

EDIT: (got bored so i give your avatar some friends)

hey. Those are some cool observations.
I havent played in a while, but I was stuck on dual rexs.
Seems like this might really tip it in my favour
Thanks oz and sorry I havent been on in ages.

No prob, I had some ideas floatng here and there anyways.
good to see you back pyro

yay thnx.
Um can you recommend some armor for dual rex.
I have the technique as lower start rex's fall easily to me and my true devil slicer.
But these guys are just too fast.
so any tips on armor, weapons, skills and tactics and I will love you
i'll make this a topic as well i think

I replied in the other post.