Your Buddy is ADORABLE! I don't think the size of a Yorkie makes them more or less adorable, to me, its all in their eyes

. I think you have it made, a well behaved, adorable Yorkie!!!
In answer to the question, I think everyone looks at something different as to what appeals to them. I've seen large Yorkies and small Yorkies that are equally cute.
ps, I forgot to add that I have a Bichon, who in his heydey weighed 32 lbs (quite large for a Bichon) and I think he is attractive because he has a huge Heart. He is old and weighs somewhat less now, but he is as beautiful to me today as the day I brought him home almost 15 years ago :-)