Landvantage 

An advantage one has over another due to being on land.

"My pet hippo would slaughter your pet rhino if they were to do battle in water. But the rhino has a landvantage over the hippo - rhinos dominate hippos on land."

Landvantage by OB & TSB February 4, 2010

lagvantage 

The advantage one has in online gaming where the lag causes him to be superior.

Most evident in Gears of War 2, when the host has the advantage over the lag of others. So goes the term, lagvantage

lagvantage by legacybl05 February 23, 2009