omg burst my little bubble, lol. What do I have there if it is not a Samatra? I realize what you are saying, the comb doesn't look right and the Silver Duckwing does look like a Golden Duckwing. Does the Penciled Rock look like it is full blooded? Looks like I've got a mess on my trade from my peahen!
Is this what I might expect eventually in the Golden Duckwing?
I suspect the Sumatra" is a cross of some sort, perhaps part Sumatrs. From what I can see I wouldn't evpect your Golden Duckwing to look as good as the other one you posted. Yours is pretty long in the back for one thing. Too soon to tell about the Rock-he does not have his adult plumage yet.
As to the trade you made I'd say the other person made out better. A lot better. Around here a mature Pea Hen brings $150 & up. Pet quality bantams $2 or less.
Sorry to be the bearer of sad tidings.