They look like cockerels to me. I had a Splash Orpington that I was sure was a pullet, turns out he was just a slow developer. I didn't figure it out until he was 12 weeks old
HELP PLEASE!! Hens or Roosters???? - Page 2
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The answer to your question is hen's, because 1st of all hen's smaller combs and wattles than roosters do. 2nd if those were roosters they'd have a lot less boobige if you know what I mean 3rd if those were roosters they'd be a lot more colorful. So my conclusion is you have to beautiful hen's.
If they were cockerels, they wouldn't necessarily be more colorful, since they are BO's buff is the only color they can be, and unless they are from good SQ breeders (which I assume they are not) it doesn't get much brighter than that. Also, I'm assuming that when you say "boobige" you mean the puffiness of the breasts, that has nothing to do with the gender. They might just have a full crop or the wind is blowing. My orp cockerel had a lot more feathers on his breast than his sister did.
I still say they are cockerels, Orps they tend to be slow maturing and don't get huge combs or wattles until they fill out more.
The two birds in question are very clearly cockerals. Hens do not get the long pointy saddle feathers. Buff Orpingtons can be slow to mature, I had some who did not crow until 5 months of age and I had a Brahma rooster wait until nearly 8 months of age to crow! Color has nothing to do with this breeds sex. Buff Opringtons are...... BUFF!