I think the second one looks more recognizable as ironman, and you don't really need a cyberman face to get it. It might be interesting to try the cyberman logo on the second one instead of ironman's pentagon. Just a thought.
I do like the basic idea behind it, and so far the art looks great.
I really love the concept! I think the one on the right gets the idea across more clearl,y though; and may be more likely to appeal to a broader audience.
I'd say do the one with the Cyberman face, but use the Ironman shoulder armor and the round chestlight. I think the round one is more recognizable. Good stuff!
Personally, I like the one on the left better. The color and design of the character clearly says Ironman, you really need the Cyberman's face for it to read Cyberman too.
I'm torn. I'm leaning towards the Cyber-head, but I'd probably buy either one. I think if you're going to use Iron Man's head, then you need to change the chestlight to round so it echoes the Cyber-logo.
I do like the basic idea behind it, and so far the art looks great.
A very fun idea!