Google pop: 1 link on the first page has to do with carbonated drinks, and that, ironically enough, is the "pop vs. soda" page. None on the second or third page has to do with carbonated drinks. I suspect you'd have to go to the 500th page to find the next one, which is "Billy Bob the backwoods, uneducated hillbilly's" personal webpage.

Google soda: there's a lot of "SODA" acryonyms and a surprisingly low two links have to do with carbonated drinks. However, on the second page, they almost all have to do with carbonated drinks.

Soda wins.

Oh, and Coke is superior to Pepsi.