The Difference Between Page 1 and 2 In Google?

I thought it would be interesting today, to take a look at 2 sites in the highly competitive niche of “internet marketing”. One site sits in the middle of page one and the other in the middle of page two. Both ranking pages are the top level domains (TLD) so I thought it would be interesting to see why one site sits on page 1 and the other on page 2 respectively.