JRA. Han is a lowly speed 120s. This is the only reason he is easy to kill fast. But you have to target him first so his taunt is not as effective.
With ben L, he gains 25% turn meter on a dodge. So you beat on han, but he has a high chance of dodging one of your first two or three attacks...That skyrockets him to next. His taunt puts old ben before any of your toons act. So now u have a han taunt with good health left, your team is debuffed and blocked, and evertime youbare forced to hit him, his team gets tm. So his lumi is johnny on the spot with her heal, and he can potentially receive the primary heal and the two followup heals, since your team is debuffed, he has high dodge, and his turn meter ticks on every weak hit and each dodge. And everyr turn he also has a chance to passively reduce your tm. You can't stun or block any of his other team, and stunning Han after he taunted is useless. He still gives his team TM on every attack you are forced to make; he can still dodge, even, which gives only Han TM, but this gets him closer to his next heal and/or TM reduction chance against your team.
You wonder why han needs a 3 turn taunt when he isndead long before that? Well in this case he can actually pull off a 3 turn taunt. And live. And your entire team in the dirt. It is quite possible. Han has low health for a tank, but the timing of Ben's special and the speed of his team's heals make this possible. If you find it easy to take out enemy DPS without triggering RG, now try to take out Han without triggering a heal. When you have no choice to select different targets or even different attacks, because you're blocked and/or with offense down. Lumi doesn't auto-heal like RG, but she gets her turn all too quickly while your are giving his team TM. And low health for a tank is not really low health. It all depends on how fast does Han get his dodge and pull off his taunt, and does your debuffer get blocked by Ben. This might be the new RNG defense. Once Han gets off his taunt, all decisions are taken out of your hands. All you can do is go along for the ride.
They fixed bens lead just recently. They changed counterattack to hitnthe taunter just recently. This buffs ben plus han combo. Ifbhan dodges the first attack and you dont have two debuffers (or one reliable debuffer that debuffs on his basic), i think you will lose.
Being forced to hit a healthier-than-expected Han with pool noodles while his team is unloading their specials on you at a 2 to 1 rate is an eye opener. If you are not familiar with the new Han Bomb, you might be impressed.
I don't know how reliable Plo is at dispel, but I hear only good things from those who have him at gear 9, so far.