Better family unit: I'm not sure exactly what you mean by that but I guess you're asking which are more loyal to their family group or more social. I say its the chimpanzees, both naimals are very social and spend lots of time together both animals will protect each other, both animals will hunt in groups. But the chimpanzee has a more complex social rank while the lions just have the alpha male and every other pride member chimpanzee troops can be borken down into ranks and positions. every memebr knows their rank and stays in it.
Cuter babies: The human perception of cuteness is due to our instinct to nurture our young. We will care for our young and be more protective over them because of their "cute" features. We ikmplacew the similiarities of these features onto animalst that mgiht have them as well. Big eyes, a short small snout, and shorter, stubbier limbs. Animals with these charasteristics and others are more likely considered cute. Animals with small eyes and long snouts or other features that make them contrast the appearance of a baby human are less likely to be considered cute. Both lion and chimpanzee babies have physical features that make them cute and therefore I'd have to say its a tie.
Better alphas: It was a close one but the lion. A good alpha is strong healthy and in good condition to dominate the group and maintian their territory and status. A lion pride usually has one male or two males. If it does have two males then they are usually related and have already sorted out their dominace before taking over a pride. A chimpanzee troop can have quite a number of males and the domimnant male is under constnat threat of having his dominance challenged with so many other males around.The dominant males real purpose is for himself to spread his genes and have more territory and better chnaces of survival. He really doesn't serve his troop too much except for the females knowing that thier children will have the best genes from the most domionant male. While in a lion pride an alpha male protects them from other males that might threaten his status and kill the pride females' current offispring if he takes over.