Earlier quoted context omitted.
The different scale of intention was to overturn the results of a federal general election, effectively a coup to seize back control over the government. I can see why you consider the incident in Texas to be terrorism, but you want to ignore the entire point of the J6 event and pretend it was just some normal event where a few participants got a little out of hand? Get real.
Alright, so all of these die hard Republicans had a plan to do a coup...and none of them brought guns to the actual coup? Really? It was stupid for many reasons, but it was a riot, not some preplanned ambush with weapons like is being talked about in the OP.
"180 defendants were charged with entering a restricted area with a dangerous or deadly weapon, which includes firearms and other types of weapons." [0]
What you described as a riot is considered by others to be part of a "fake electors" plot, to keep Trump in power after he lost the election [1], a plot which Pence didn't go along with. Trump even tweeted that day about it:
"If Vice President @Mike_Pence comes through for us, we will win the Presidency." [2]
[0] https://www.reuters.com/fact-check/us-capitol-attack-rioters...
[1] https://en.wikipedia.org/wiki/Trump_fake_electors_plot
[2] https://www.presidency.ucsb.edu/documents/tweets-january-6-2...