I think it your opinion will drastically change. What you don't see in most cases is the subtle shading in the faces. The details inside the mouth. The crispness and textures of the paint details. So until you get your first one....it's fair you have that opinion.
As far as the Iron Man...yes that is the exact one I am referring to...when comparing to the SS IM MK42 maskless RDJr. There is just no contest. Actually...some new pics were just put up several days ago...although granted I am not sure if that is from recent in hand pics or earlier pics from the shows the IM was present.
In any case, if you have got reservations of XMs paint and sculpts and everyone vouches for it....then I don't know what to tell you. I'm not sure if you are talking specifically headsculpt or whole statue here? I tell you one thing...when you feel the solidness of the statue and see the tightness of the sculpt, not to mention the crispness of the paint apps...you will soon realize these are special statues. It just feels better....feels more whole...that's about the most honest way I can say it. Well, you will see soon enough. IF you don't like it...then you don't like it. XM is not for everyone....and certainly not for everyone's pockets.
Also, I think you will agree that every company has hits and misses on headsculpts....everyone.
Nobody I don't think has ever said this head sculpt is 100% perfect...but there is no way this is not a great headsculpt. Look at how the skin almost has a translucent resin type look.