[rfugger]

The source of the comparison is that the main thrust of both SCTP and SPDY is multiplexing multiple independent data streams on a single connection.

[piotrSikora]

Is is, really? For me multiplexing is just nice addition to SPDY.

Personally, I consider "server pushes" as the main feature and "full encryption and compression" as nice improvements.

[Lennie]

Well, the primary reason for the existence of SPDY is encryption everywhere and speed. Something which with current HTTP/HTTPS doesn't really exist. HTTPS is still slower than HTTP and HTTP is slower than SPDY.

A lot of the speed increase comes from the use of multiplexing. So without it, it wouldn't be able to achieve most of it's goals.