First of all, this is the reason for the hero's characteristics. Every hero has different characteristics. The system divides the positions according to his own understanding. How a player plays depends on him. After all, the characteristics of heroes are dead and players are alive. Take Dian Wei for example, as long as you kill the enemy or assist him once, you can increase some damage. If you assist or take more heads, the output effect will certainly not be bad.
Secondly, it depends on how to install it. Even if all the defense equipment is installed, it will have an output effect, because some defense equipment also has an output effect, such as ice mark grip, violent armor, red-violet cloak, etc., and the defense effect is good. If you want to have a little output damage when choosing a tank, it is ok to choose a hero like Cheng or Zhang Fei. Again, it depends on how you pretend.
Personally, it is enough to choose a hero in any position to complete the task. Since we have chosen the position of the tank, we should make good use of the defensive equipment. After all, your main task is to organize a group in the later period and resist injuries. As for the output, leave it to the output bit, don't think too much. Some players are really helpless. Since you want to output the effect and choose the hero in the output position, why choose the tank? I hate this type of player anyway. A tank is a tank.