The oddity of it all just pisses me off sometimes. (warning...random rant)

Now I know there are different types of fibers, strength and size are two different animals, etc. etc...but my tech knowledge is poor when it comes down to how it all works. Im sitting here looking at guys who have a 1RM 75lbs less than me on the Flat Bench over on other boards, and these guys have pretty amazing chest size and definition. Ill be honest, I really dont have decent chest size and definition. I think I move pretty good numbers for a guy my size, and yet Im bombarded with pictures of people who lift significantly less and look amazing...looks that I aspire to over the next few years.

I seek knowledge. Help me understand the difference between size and strength. Point me towards literature. Aint life a bitch?