Nowadays you can find infographics almost everywhere on the internet. If you search long enough you might even find the one that supports your claim.
Look at this infographic below for example. If you
click on it (↑) it will open in a new window.
Update: Seems like you must me registered and logged on to Pinterest to be able to access that particular infographic. Sorry.
A closer look reveals that often apples are compared with pears.
Let's put it in the category fun facts.
The most important info for your decisions are your very own metrics and the bottom line in dollars or euros.
Be open to run experiments with new media from time to time and check if a trend could work for your business. But don't get crazy over it.
Email has one big advantage. It works on your terms and you own those email addresses.
Make the best out of it.
Yours
John