The only reason the Hufflepuffs are so far behind on Pottermore is because when people get placed in Hufflepuff, they get upset and make a new account. Stop it. All the Houses are unique and you should be happy no matter which one you get sorted into. amirite?

Why do people care so much about this? Every House is based off of a good trait:
Gryffindor: courage
Ravenclaw: intelligence
Hufflepuff: kindness
Slytherin: cunning

Also, none of them say that you can't have the other House's traits, it's just the one you best exemplify. Hermione was a genius, but she was a Gryffindor. Luna Lovegood was really brave and kind, but she was a Ravenclaw. It doesn't say that much.

I'm in Hufflepuff and proud of it!

i just made an account, when/how do you get sorted?

Actually, we Ravenclaws have the least members. The Hufflepuffs even have more than the Slytherins.