Why is Google Ranking everything?
Well the answer is easy:
Just check out the graphic below that shows the statistic which search engines have been used most over the last 11(!) years only in Europe.
Source: StatCounter – Global stats
93.36% of all internet users in Europe use GOOGLE and with
2.81% bing is on 2nd place!
So if your SEO expert only performs and dedicates his work to Google’s search results then he is basically doing what’s best!
PLUS! Today’s most used web browser (covers around 51%) is also the Google Chrome browser (see img below) which is by default using the Google Search Engine.