Oh well, I guess its legit from Marvel's side , but agree with Bloke, it wasnt nescessary
Marvel has alot of money, I doubt they need to sue
But on the other hand, Im an artist myself and I can only imagine how much it would suck to be copied to the dot so badly and make profit off of one of my models and claiming its theirs just because they tilted its nose or made a reproduction with a different pair of boots
Then again , when you are this big its pretty much just publicity ... as everyone knows those famous figures anyway...