That's a good point, I hadn't thought about it, really.  But yes, you're right.  You know, I've often thought that Neville would have made a good Hufflepuff, not because he's forgetful and clumsy, but because he is loyal, and hard working, and his best subject is Herbology.  Where as Gryffindor is made up of the brave and daring, and though he is both of those at times, I think the only reason he is in Gryffindor is because JKR needed a character like him, and he wouldn't have been friends with Harry if he'd been a Hufflepuff.  He and Luna are two of my favorite characters (aside from the three main ones).  Sorry if this sounds weird, my brain is really fuzzy because I've got a cold with MAJOR sinus pressure.  It feels like there is a C clamp pressing my temples.  Ouch.

Several more points:

1. I've thought many times that Neville belonged in Hufflepuff. Sometimes I wonder if certain characters are put in certain houses just because it's convient for the plot. Like, how did Pettigrew get into Gryffindor? 

2. JKR totally favors Gryffindor. She's said several times that that's where she'd want to be sorted. It shows.

3. I think Helga Hufflepuff's saying anyone should be allowed to go there, she'll treat all the students the same should be admired. A lot of the time it gets turned into, she'll teach any old idiot. It's not that, it's that she doesn't, I dunno, discriminate. 

I was remembered reading something in the order of the phoenix that brought the 'unfair to Hufflepuff' thought on me. In the sorting hat's song this is written.

'For instance, Slytherin
Took only pure-blood wizards
Of great cunning, just like him.
And only thouse of sharpest mind
were taught by Ravenclaw
While the bravest and the boldest
Went to daring Gryffindor.
Good Hufflepuff, she took the rest
And taught them all she knew'

Doesn't it sound like Hufflepuff didn't get the best of the best? It was just in a sorting hat song, but to me it sounds like all the leftovers became Hufflepuffs. Which i think isn't right. I wish that the books had centered on 'loyal and hardworking' Hufflepuffs.
(i quote Draco in the Philosopher's Stone)

'Imagine being in Hufflepuff, i think i would leave. Wouldn't you?'

But then, it IS Draco.

Also Hagrid says this shortly after.

'Everyone says Hufflepuff are a load o' duffers'.

Looking though all the books i am wondering if J.K. Rowling didn't like the Hufflepuff house very much. Though i don't know about the rest of you, but i love Hufflepuff!