[nextstep]

In both cases, the party establishment tried to prevent a candidate on the left from gaining power through deceitful means. They tried to rig things against Bernie and Sanders.

That’s the comparison being drawn here. Does that make sense?

(Yes, the details are different as the mechanics of these party systems are very different.)

[untog]

To the extent that the comparison is so absurdly simplistic that it doesn't do justice to either of the situations it's trying to describe, sure, it makes sense.

Staff within the Labour Party running ads to deceive their party leader into believing they were running a more progressive message than they actually were is literally nothing like anything that happened to Bernie Sanders in 2016.