If this character from Blade Runner is a replicant, why does he feels pain?

I remember the scene where Sebastian asks the replicants to demonstrate something, and then Pris put his hand into a boiling water to take an egg without feeling pain. Or Batty breaks a wall with his head. This means that replicants don't feel pain

Now my question is: If this character:

is a replicant, why does he feels pain when Batty breaks his fingers?