Both were ultimately and unbelievable scarifice for Peter and Loki to keep their friends and loves safe from a far greater threat, but my favourite is definitely and importantly is loki for me because he gave up his entire life to save the enterie multiverse and his friends to give them a new life and to create a better difference and new way of keeping the flow of the timeline more secure and more balanced too. Peter was amazing too, but that was more of keeping his identity safe, but also having to know that he's a ghost watching the people that he used to know now as everyday folks. And him becoming the hero that we was meant to be as the one and only spiderman.
Which Scarifice was more tragic and more painful?