https slower than svn+ssh?

[Anton Shterenlikht]

SourceForge says:

"Access over https will not perform as well as svn+ssh,
so it should only be used if access using svn+ssh is problematic"

https://sourceforge.net/p/forge/documentation/svn/#readwrite-access-via-https

I wonder if this applies only to SourceForge,
or is a known fact for any svn connection.

Thanks

Anton