I seen this boba rubies helmet in a hobbie shop as a presale display. It did not look that great at all.
The vader on the other hand looks very good, its not a recaste of the classic action don post because I noticed the cheeks have the uneven sides, but why cant they do good Fett helmets I just dont know, the size really isnt the problem it looks almost like a mystery helmet in size, I cannot be sure but I have seen both up close and they look similiar, but the paint job on it is horrible.