I really like this artwork. Joker’s excited expression as he leaps into a shadow-infested warzone is amazing. The use of bullets in both of these promotional artworks are also fantastic.
More artwork for comparison. Imagine your boss tells you to put these 4 in the same game and make sure they absolutely do not look out of place or you're fired. I can imagine having to coordinate multiple teams on top of this as well.
This even extends to the Fire Emblem cast. Some of you may think they all look the same, but they managed to adapt the work of Yusuke Kozaki and Chinatsu Kurahana.