That side definitely has a more defined hairline. The other side the hairline is kind of "spread out" like it fades into thick hair, with some thinner intermediate hair spread around.
But on this temple in the pic i used to have a patch of hair shaped like a triangle that was noticeably thinner than the rest of the hair. It was part of the middle section of hair. When my hair was longer i could comb it over and in direct light you could definitely see some scalp straight through the hair. Since i've been buzzing my head i've slowly noticed this patch disappear, in that it began to look thick like the the rest of the hair.
Hopefully the hair on the other side follows that trend. I've got pictures of that temple in my hair loss blog.