You can also counter Kylos with 2 tanks. It requires Han (can be low gear, as long as he can do the first turn stun), a low gear armorer (needs the initial 2 beskar stacks skill lvl), a very fast Thrawn and a pre-taunt.
The general strategy is to stun Hux (so he cannot swap tm with Kylo), then take a blow from SLKR (followed bit SiT assist) with your pre-taunt, so his hp goes below 60% and your armorer gets the 3rd beskar stack. Finally, Thrawn gives the turn to your armorer. Give the 3 stack beskar armor to SEE and click on auto.