He is not more important in an objective sense. Most people would agree in an abstract sense that all lives are equally valuable, but would readily save their child rather than another if it came down to it. Why? Because they value the life of their child more than the life of another's child, and there's absolutely nothing wrong with that.

Amit, as a member of the startup community, is our child, as it were. Due to this commonality, we feel closer to him than 'faceless' people on the list. So your last sentence might read: "His life is more important than everyone else on the transplant list to us."