I think the problem with Armada is that many X-Wing players didn't feel the need to invest in another Star Wars Space Game after spending money on X-Wing.
And many of the simple and nice mechanics were abandoned for Armada and instead we got a 6 turn wargame system again. Also the ability to manuever in X-Wing can be answered with a K-Turn but Armada punishes the player until they have played enough games to manuever and get the best firing arcs.
Now I was lured in with the chance to buy and play Imperial Star Destroyers and Mon Calamari Cruisers but money is a real thing so it's not surprising that many X-Wing players I have heard from don't feel inspired to double dip on a second FFG Star Wars starship game.