Comparing two different classes from different games is a difficult task as each game has its own unique mechanics and balancing. However, we can compare the general characteristics of Paladin and Bard in Lost Ark to get an idea of how tanky each class is.
In Lost Ark, Paladin is a class that is known for its tankiness and ability to absorb damage. They have high health points (HP) and defense stats, and their abilities are designed to increase their survivability. Paladins can also heal themselves and their allies, making them a popular choice for group content.
Bard, on the other hand, is a support class that is not known for its tankiness. They have lower HP and defense stats than Paladin, but they make up for it with their ability to buff their allies and debuff their enemies. Bards also have a wide range of crowd control abilities, which can be very useful in group content.
When it comes to solo content, Paladin is generally considered to be a more tanky class than Bard. Paladins have higher HP and defense stats, which allow them to take more damage and survive longer in combat. They also have the ability to heal themselves, which can help them stay alive even in difficult fights.
However, in group content, both classes have their own unique strengths. Paladins are still very tanky and can absorb a lot of damage, but Bards have the ability to buff their allies and debuff their enemies, which can make fights easier for everyone. Bards can also provide crowd control, which can be very useful in situations where multiple enemies are attacking at once.
In summary, while Paladin is generally considered to be a more tanky class than Bard in Lost Ark, each class has its own unique strengths and weaknesses. Paladins are great for solo content and for absorbing damage in group content, while Bards are great for buffing allies and debuffing enemies in group content. Ultimately, the best class for you will depend on your playstyle and the content you plan on tackling.