Huge comb at 4 weeks - what are the chances it's a hen?

[Madriverbantams]

Hi all, I know 4 weeks old is pretty young to be sexing but I have one chick who has grown a ridiculously large comb. This particular chick came from a huge egg, was a huge chick from the get-go, and has grown much faster than the others. One other chick I suspected of being a rooster because it feathered in so late and barely has a tail still has a tiny comb by comparison.
What do you think? Breed is likely an Easter Egger x Naked Neck without the naked gene. Possibly a mosaic father but doesnt seem likely.

Size comparison:

Compared to my Easter Egger Mosaic I initially suspected rooster:

Thoughts? Thanks in advance!

 

[nuthatched]

Definitely a cockerel. The second looks like a pullet do far.

 

[SilverBirds]

Definitely a cockerel. The second looks like a pullet do far.

X2

 

[Madriverbantams]

An update - yes, confirmed as a boy. Thanks all!