It all boils down to how Tony needs a villian with ties to the 10 rings organisation which has been teased and its leader, the villain who wields ten alien artifacts on his fingers which goes against IM comprehension of technology and science. This has been the conflict for every IM vs Mandarin story ever written. IM's tech vs 'magic' or alien science he has to overcome.
Except, the trailers NEVER hinted that Tony was up against some guy with alien artifacts. The fact that people were expecting that shows how much people projected their own little fantasies on what they think would make for a good IM plot just because they saw some "turrerrisht" that resembled the typical outward appearance of the Mandarin. Also let's blatantly forget the fact that he was never even shown as demonstrating any level of "mysticism" in the trailers and looked like some Bin Laden expy that employed disguised-media helicopters to shoot down Stark's home. Wooooooooo~ because that sure showed Tony off with some good ol' "magic" amirite?
And the alien rings? Let's
actually think for a moment how that could've turned out for the general audience...
Tony: "So what am I up against here JARVIS?"
JARVIS: "It seems to be manipulated by some collection of alien artifacts, sir."
Tony: "Excuse me, but come again?"
JARVIS: "Sir, the Mandarin is discharging elemental forces through the use of alien artifacts in the form of rings."
Right. You'd have the average person asking "So wait what's the root of all of this?" Well, because dem aliens are at it again... dun dun dun we sure didn't see THAT coming.
Jokes aside, how come I didn't see anyone complain over how Red Skull somehow got turned into Captain America's twin in terms of being his predecessor within the Super Soldier program? All for the sake making him seem like a far closer enemy than he ever seemed within the comics. Yet when we're given a compelling plot that actually tries to tie the Mandarin a lot closer to Tony Stark's inner conflict in regards to the concept of identity ("Iron Man" vs Tony Stark), people are quick to dismiss it as a throwaway plot. Why, because you wanted to see some science vs magic plot? Talk about priorities.
So wait, is it because they mashed both Extremis and Mandarin? How unheard of?! Let's take a moment and look over here, taken straight from the wiki I present the storyline of
Iron Man: Director of S.H.I.E.L.D. (#15-28):
The Mandarin infiltrates the U.S. government via his role as CEO of Prometheus, a corporation specializing in bio-engineered weaponry. He appears to be using Extremis creator and Tony Stark's former love interest Maya Hansen to produce an army of Extremis enhanced soldiers as well as financing and arming terrorists around the globe. The Mandarin also appears to plan unleashing the Extremis virus in aerosol form on the public, expecting the 97.5% fatality ratio to cause a mass catastrophe of deaths. The Mandarin admits to Hansen that even he will die in the outbreak but she and those with the gene to survive will become free from disease and become effectively immortal. Though he has his Extremis disabled, Iron Man defeats the Mandarin while wearing the Silver Centurion armor by tearing five of the rings out of the Mandarin's spine, blasting him with those rings, his unibeam, and repulsors at the same time, and then freezing him as he is engulfed in deadly concentrated Extremis virus. Iron Man then prevents the Extremis-outbreak.
When the Mandarin's apparently frozen body is autopsied, all that is found is a blackened husk... not unlike an Extremis chrysalis.