Sexing frizzle chicks

[Seep77]

So my gut is telling me these are both cockrels, but I wanted to verify. They are both super inquisitive, which again screams roo, but what made me question is they're the same age (7 weeks) but one has a comb much larger than the other. Any help would be appreciated!
Pic #1

Pic #2

Pic #3 both together

 

[Northwest_Wannabe]

How old? I'm thinking cockerel on the one with the large comb :'(

 

[Chickenhappy8708]

Pullet and cockerel i think.

 

[Buffbrahmasforever]

Age?

 

[Seep77]

How old? I'm thinking cockerel on the one with the large comb :'(

They are 7 weeks old

 

[Buffbrahmasforever]

They are 7 weeks old

Cockerel and pullet