In my oppinon the general mass of the population of these groups (Most religous and non religous) values life equally in most respects. (depending if this also include eternal life) Due to the general mass having the same views on topics about life, for example the natzi's and any other tyrant that caused a genocide as such and how they were wrong and the lifes of the people who were killed did not deserve to die and other arguments (first agrement that came to mind sorry if it is a little offtopic in this post), sure there oppinions differ slightly in some other topics, for example in the argument about abortion one group will force the mother to have an abortion but the other will not and let her choose, but in either case in that argument both groups (i hate having to place people in a specific group) would be arguing for the value of life, either the life or the continuation of the lifestyle and enjoyment of life of the woman in question, or the life of the featus or child in question.
in retrospect to that post as a summary, in my opinion the groups in question on average value life equally, but in a different ways.