For all three of them I did the same thing and fought with the guards in whiterun/dragonsreach to see just how powerful they were and how long I could last without dying.
Warrior tank:
This guy with the fully hacked legendary dragon armor and 100 heavy armor is insanely sturdy and pretty much impossible to kill by the guards, the fahr and everyone else. Even with 5 guys attacking me each of their hits tickled. With the two handed weapon he did decent damage too but I didn't find that he killed as fast as I would like. But he is pretty much invincible, especially with the shield. This is godmode without actually activating the godmode hack.
Here's the hacked warrior with dragon armor.
http://www.youtube.com/watch?v=p0HBpm3WEE0
Assassin:
With the 500 stamina, and legendary dragonscale armor, and duel wielded legendary swords, this guy could run around all day and use his special combo all day without having much fear of losing too much stamina. I did take more damage than the pure tank and that's largely due to the dragonscale armor vs the dragon armor but I took out every guard in a few combos instead of a few slow hits like the tank. Overall I think the assassin is the most viable in the game. Able to plow through everything quickly and have enough defense to survive.
But the dps is incredible only this guy, he didn't even need his sneak and backstack to plow through everyone.
Here's the vid.
http://www.youtube.com/watch?v=yV1CrWhHZNg
Mage:
I only used the adept and master spells here and overall they were viable... against whiterun guards... but not half as good as the other two. I was constantly running around afraid to get damage and mana was a big problem.
Destruction: Overall the adept destruction spells wall of flame, wall of ice, ect were the most viable. You could create a wall on the ground or blast enemies directly and they take a lot of damage overtime. The only problem is it drains mana too quickly and I don't like not feeling invincible like I did with the other two classes. The master spell lightning storm is like a dragonball kamahamaha and decently strong but it drains way too much mana I had to use godmode to use it and you can't move while using it. The master spell fire storm better and is like a self fire bomb that explodes fire in a radius around you killing all the guards in one hit, the only problem with these spells is it takes like 5 seconds to cast.
Conjuring: The master level thralls I was able to conjure were actually pretty strong. The fire thralls did the most dps but died kind of quickly. LIghtning also died pretty quickly but did decent damage. The two ice thralls I summoned never died but did the least damage. Overall I think the ice thralls were the best to summon but they cost me like 580 mana apiece to summon with the perk, but with the perk, 290 which is still a lot. Conjuring is also decent but the thralls didn't folllow me inside buildings.
Illusion: the master spells harmony was decent and did it's job making everyone pieceful. Hysteria scared everyone away, mayhem caused everyone to fight with the perk, but without it some of hte guys like the jarl aren't effected. It's mostly useful with multiple opponents though it costs so much mana and takes 5 seconds to cast each one.
Alteration: I only ahd the master spells dragonhide which is like invincibility for 20 seconds. It's not bad and I can see it useful for certain situations but honestly if you're a warrior you can tank a lot anyways.
Here's the mage video. Whichout the conjured creatures and it being night so there's fewer guards I would've gotten pwned no matter what spell I used.
http://www.youtube.com/watch?v=ceo6wwOMq-4
Overall I have to say that the melee was significantly better than the mage late game cuz I felt like a god able to plow through anything while with the mage I still had to run from not very strong opponents and ran out of mana too quickly.
The game's not balanced in magi vs melee and I hope a patch can fix everything.
