I wonder how the hell the Bundy's stood up to the Feds....the Feds had nukes and tanks and shit! LOL.
The Bundys are clowns. I wouldn't attribute their ability to "stand up to the Feds" to tactical proficiency. And I don't mean because of nukes and tanks. I mean because I'd expect a radically different level of individual proficiency with a firearm between them and an FBI HRT member.
ROE's play a large part in that sort of stuff. I don't think law enforcement stand-offs are the best examples to use to rationalize either side of the "How would civilians fare against a tyrannical government" debate. I'm not a LEO, but I'd imagine that in those scenarios they're mostly hoping the ass clowns in question will pack up their toys and go home before violence becomes necessary,
It does not, however, always work out that way. When it doesn't, it usually isn't a triumphant moment for the "resistance." It certainly wouldn't serve as an example of successful resistance.
In the specific instance you mentioned, one civilian was killed. No law enforcement were. The occupiers, who just days before made bold statements about "fighting to the end," packed up their Crye Precision and went home. Several were incarcerated.
Ten days before he was killed Lavoy Finicum stated "it needs to be very clear that these buildings will never, ever return to the federal government."
It didn't play out that way.
This isn't mean to say anything one way or another about the 2A, just that that's probably not the best example to use. It could almost serve as evidence to support the opposite of the argument you're making.