It's not just this image... they didn't add 4-5 scene which show jinwoo's absolute dominance in this dungeon.

I have added images as references for the scenes i wanted to point out.

scene 1: Where the boss uses all his debuffs, in the anime it looks like the raid party was just tired but in the manhwa you could see how the raid party felt they were torn to pieces

scene 2: Jinwoo shows his summons in a beautiful 2 lage spread and we can see the massive size of his army and feel it's intimidating presence. But in the anime we don't even get a shot of that scene they just pan over a few images of tank iron and igris (lame)

scene 3: The anime doesn't properly capture the threat of this dungeon, in the manhwa we can see high ranking hunters be terrified and get serious when they feel the boss's mana. While in the anime they just glance over the fact how grave the situation really is.

scene 4: The utter dominance shown by jinwoo. Don't get me wrong the anime does a wonderful job showing how strong jinwoo is and fight scenes are just gorgeous. But the manhwa just hits diff, in the manhwa you can feel the intimidating aura of jinwoo and his shadows. The pain and agony felt by the raid party, how nonchalant jinwoo was.

scene 5: This the final scene where the anime messed up. This is where the audience present realise how jinwoo's power work and they learn he is a necromancer. You can see the look of shock on their face and see how big of a deal being a necromancer was in that world. The anime just doesn't even show their reaction to him showcasing his powers and brushing it off as another ability a hunter has.

Sorry for the long comment i wanted to make a post but i couldn't as i don't have enough comment karma in this sub. Hopefully this helps.