Mitigation, the REAL problem. Also, operatives need a 2x dmg multiplier.

Lol i still renamber when they announced the red zone it took over 600 pages and over a million views to get the first ( and not so helpfull ) response xD

Yes, because it's got nothing to do with the argument at hand.

If you're beating on a tank, or anyone at all really, with a pet healer instead of switching to the healer you deserve to lose.

There's also the fact that twice as long still isn't particularly long at all, with the damage numbers being thrown out.
Promises, promises.
Tank: 1 DPS.
Healer 2 (for damage-dealer DPS): 2 HPS.
DPS mitigation: 30%.

Tank goes down like a wet paper rag.

Or, alternately, DPS hits healer instead of tank. Dealing unmitigable damage to tank due to Guard and preventing healer from healing effectively.

You're welcome.
Actually they have exactly the same mitigation as DPS characters using the same AC. Only a lot lower damage and pointless stat allocation on gear.
Except that's something you should never, ever do.

It's better to hit the guarded target than the tank himself. Unless the guarded target is another tank, in which case you hit both to overload damage on the guarding tank.

This isn't rocket science, if people are attacking the tank when there are other targets they are bad, end of. Tanks are supposed to be controlled, not beaten down when there are other targets around.
Except that's not an undisputable fact by any means.

And, as should be obvious, not something you'll convince a lot of people here about.
Or you could equalize mitigable abilities for the other classes, making tanks less useless and reducing the nerf-cries for Sages/Sorcerers and Scoundrels/Operatives in one fell swoop.

wich again its not the topic of this post, all tanks can have the same armor using dps gear, please focus yourselfs in the real issue wich is TANK STATS, not armor.

The SW:TOR Beta started 23/06/2010, that's one and a half years ago. In that period this issue wasn't resolved, why would it be any time soon? You can't really say 'the game just came out so it doesn't matter' when its been up and running for 1,5 years.

As to the "how many attacks do damage besides weapon-damage?" question:

I decided to try something today, did a bunch of warzones with my shield generator exchanged for a power generator (so 0% chance to shield.) I didn't notice the difference. So in my humble opinion the answer to the question is, not enough to notice.

Shielding needs to be fixed. Not just for survivability, but lots of talents (I'm looking at you, Shieldtech Powertech tree) hinge on shielding actually working.

Are tanks underpowered? That's debateable. Should everyone's major class mechanics work before we start deciding what is or isn't balanced? Absolutely. How would DPS classes like only being able to crit against "the right" classes.

with a low player base and you dont really know how many skilled pvpers were actually playing.

Was the issue given notice at the time? It's incredibly short-sighted to say that because an issue hasn't been fixed yet, it will never be fixed.

they would have to re think their stragegy switching to power and accuracy rather than crit and surge, or remain like they are to kill non tanks

The OP's entire post is directed around Internal and Elemental damage causing these problems. My point is - Sorcs/Sages and Ops/Scoundrels have at most, three attacks that deal that type of damage and only one of them doesn't have a cooldown. So over the course of a fight, regardless of his tanking stats and whatever, internal damage should only be a problem for two or three attacks. That's it. He's making it seem like all of the damage coming from these two classes is internal when in fact it's the minority of their skills that do that. There's so much talk about the tanks instead of people talking about the fact that internal damage is not the majority of the damage you'll be seeing.

There's a secondary compounding problem in that unlike most other classes, all of their primary damage is tech damage, which ignores defense and skills that boost it. On top of that, they have a buff that not only applies an internal damage dot for decent damage, but also ensures that they are always bypassing 50% of armor completely with every attack, UNLIKE any other class.

The class is built to penetrate defenses, there's no doubt about that. The question is whether or not it's too good at it.