I have bought about 12 Hot Toys figures this year, and none of them has any broken parts. The only problem I had out of the 12 figures was with Ironman Mark 1 where the rocket on the left arm was installed in an "incorrect" position. I took it back to Toys Hunter, and they were able to give me a new one without any issue at all. I don't know if it'd be so easy to fix the problem if this had happen to a Medicom figure (where I have a few Masked Rider with broken legs, Goku with ripped neck, and The Next V3 belt issue, of these I was only able to get a replacement neck for my Goku figure).
I do not see any quality issue with Hot Toys figures, maybe its just pure bad luck.