Adsense customization question

[Alothere]

Hi all, not sure how much of a noob question this is but here goes.

I was looking for information on customizing adsense and i came across this page talking about premium adsense accounts.

The Privilege of Being an Adsense Premium Publisher

Here's the thing, I love the way this guys adsense looks. Specifically the setup of 1-2 ads going across like he has.

What I'm trying to understand is where this guy is only able to do this b/c he's a premium adsense publisher or am I just completely missing something? B/c i cannot find any such option in adsense...

Thanks is advance!