This.

Varian is a bigot and an asshole. Thrall's past was much worse, and yet he came out stronger. He's an optimist. Varian's a pessimist. Would you rather have a leader who looks to the future or one who is constantly entrenched in the past?

Varian needs to look past his own emotions and do what is best for his people, not himself. A selfish bigot is all he is, he's no better than Garrosh.

If your argument is that Thrall's past is worse than Varian's, you've either chosen to ignore what you don't want to think about or simply don't know of what you speak.

"Unfortunately Daniel seems to be coming from a pro-Alliance biased point of view. King Wrynn's actions are very self-centered and his beliefs are questionable at best and flat out wrong at worst."

Everything Varian "believes" is right. It may not be the best action from the viewers standpoint, but in his mind it is perfectly reasonable.

"He blames the orcs specifically for his gladiator experience. Sorry Wyrnn but the orcs don't run the Areans, the goblins do. As King he should obviously know that the goblins aren't part of the Horde. Their 4 towns in Azeroth cater to both sides after all."

This could be because he was bought by an Orc, fought in an Orc city and because the matches were mostly attended by Orcs.

"He blames Thrall specifically for wrongdoings of the Horde. When Stormwind was razed, Thrall wasn't even in the Horde. His ENTIRE clan was banished from the Horde for Durotan questioning the actions of Gul'dan and the Shadow Council. Unless Wrynn's advisors are totally incompetent, they would of told him that this Horde is different than the old one due to its new leadership. Jaina specifically would of told the King that without the Horde's help, we would of lost at Hyjal and Azeroth would be a burned out cinder."

First of all, Varian has no way of knowing that Thrall's clan was banished. Secondly, the Hordes action at Hyjal is as much selfish as it is noble, since the Legion and Scourge would have killed them all equally. Also, the battle was ultimatly won by the Night Elves and the Wisps, not the Horde.

"Remember according to the Missing Diplomat quest line for Alliance, Thrall and Wrynn were supposed to meet at Theramore for a summit when the King got kidnapped. Apparently Wrynn's amnesia extends back to forgetting why he was doing that in the first place."

He remebers going for peace talks. He also remembers going again to find his slave master at Thrall's right hand, while the bloodthirsty son of a murdering invader stood at his left. Finally he remembers the Orcish assassin who tried to kill him at said second peace talk

"Wrynn is going to do what is best for Stormwind and no one else. He doesn't care about Scourge, Yogg-Saron or the Legion. If burning down Ironforge would rid Azeroth of the Horde, Wrynn would be there with 2 torches in hand I have no doubt."

He cares about the ALLIANCE as a whole. He considers it bad for the Alliance to ally itself with a faction that has killed a massive number of his troops in a surprise attack during a supposed truce.

One thing people have to remember about the Wrathgate is that Varian does not know everything. He does not know that the RAC betrayed the Horde. After killing Putress, he hears Sylvannas and Thrall in the throne room. He has no idea that they had to fight their way into the city. As far as he knows they have been siting there the whole time, patting each other on the back at a job well done for killing the Alliance

except i very much doubt Ironforge would burn given its hewn from solid rock and uses molten lava as interior decoration

Varian has been gone for too long, not seeing how much good the Horde has done throughout vanilla and TBC. I guess he just some really, really shitty advisers who don't tell him anything, that maybe encourage him to think that the Horde hasn't sacrificed much to work together with the Alliance.
So there's a possibility he's only stupid in an active, verb sense. Not a passive one.
I still consider active stupidity stupid though.

Wrynn probably isn't stupid. If he were, that would be the easiest way to explain his irrational actions. I find this to be very unlikely though.

Could he be getting bad information? This is more likely. Yogg-Saron seems to be implied as being, not only "a" death god, but a master manipulator. After all Yogg corrupted Deathwing, and very well could be causing all the problems which are distracting the 5 Dragonflights. Manipulating a mere human? Cake walk for an Old God. Although never mentioned ingame, Onyxia was influencing the events in the comics when Wrynn was in the Arenas. We all know the Black Dragonflight is basically an arm of Yogg-Saron.

What is a tad confusing is that, as mentioned ingame, only 4 years passed from the end of WC3:FT to WoW. So Wrynn would of been well aware of the fact that the Horde was crucial to the success vs the Legion. He had just been kidnapped when WoW launched. Supposedly he was going to meet with Thrall at Theramore for a summit.

Simple version is I think Blizzard just wanted a prominent antagonist. Lich King and Malygos are the Big Baddies but are clear-cut "bad". Wrynn can potentially do a LOT more damage but with "good" intentions.