The proof of the broadband is, as always, in the download speed. Gogo’s peak speeds of 24Mbps just about scrape the accepted definition of superfast.
Whilst not by any definition a superfast connection, Computer Weekly averaged a download speed of just over 10Mbps, which was perfectly sufficient for email, social media, and video streaming.
Note also that Gogo’s servers are located in Chicago. On a commercial airliner, this would not necessarily be the case.