Is this a pullet or cockerel?

[mariposa]

This is a 5 week old Polish buff. This is one of my larger chicks in group of 5 and I thought it was a roo due to brave behavior and late feathering, but its clutchmate (a definate roo) has a bright red cere and comb and this one does not. However, its crest is much spikier and less rounded compared to same aged known pullets in my group. Could it be a pullet?

 

[jallny]

i am not good with this breed but it looks like a pullet

 

[AlicesSilkies]

I am leaning towards pullet, however, wait another 2 weeks to see, this is my pullet at 13 weeks, she has a very even and wide crest.