Om Malik:

Whether it is the fear of carrier overages, or just the preconceived notion that WiFi is faster, most of us continue to log into WiFi expecting it to be blazing fast. But it isn’t really true, both from my personal, anecdotal and totally unreliable point of view and from a data-backed view. Most of the popular public WiFi platforms like Starbucks WiFi, Xfinity, hotel WiFi and a whole lot of others are quite slow compared to a good LTE connection—especially Verizon, which is pricey but reliable.

This is so true. I connect to WiFi just assuming it will be faster than LTE, but many (most) times it just sucks.