Column A contains the search query
Column B has G, E, or Y depending on which engine produced the best results on the search query before Relona's optimizations. G indicates that Google was better, E indicates that Google and Yahoo were equal and Y indicates that Yahoo was better.
Column C shows what happens when Relona is used to enhance Yahoo. G indicates that Google continues to be better on that query. Y indicates that Yahoo enhanced by Relona is better. E indicates that Yahoo+Relona was equal to Google on this query.

Observe how a large number of "G"s in column B become E or Y in column C. Also, notice how an E in column B often becomes Y in column C.