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Given the following post, respond as if you're commenting on Reddit:
human
[X-men] Why did Weapon X select Wolverine over  Sabretooth to have an adamantium-fused skeleton? 

It was my understanding that both have identical healing factors and so could survive the operation, but that Sabretooth was more willing. Why not pick him?
gpt
Department K: Weapon X Program

To: [REDACTED]

From: [REDACTED]

Subject: Adamantium bonding candidates.

It is the finding of the Weapon X team that the best initial subject for the Adamantium bonding is subject [REDACTED], codename: WOLVERINE.

Initial tests favored WOLVERINE over operative Victor Creed, codename:SABERTOOTH. Examinations from the medical staff following mission debriefings showed that while both subjects healed at an accelerated rate, WOLVERINE has the more efficient and effective ability.

<NOTE: Replication of this ability has been moved offsite, codeword:DEADPOOL>

Further testing and psychological profiling of subjects [REDACTED] and Creed show that the while both are effective soldiers and agents, subject Creed has unresolved issues stemming from repeated abuses from his father. The lead psychologists stated that they believe that agent Creed's and agent [REDACTED] willingness and effectiveness as soldiers stem from their experience on the battlefield. Both soldiers are suspected of having some degree of operational exhaustion. Both soldiers have recollections of battles and actions that should have taken place before their lifetimes, leading the psychologist to note on bother records that “neither subject was taking the psych profiling seriously, giving me tales of battles from as far back as the First World War.” The lead psychologist also noted that while they both gave similar accounts of battlefield actions, agent Creed had a rather “savageness” to his descriptions. Agent Creed seems to revel in the inhumanity of the battlefield and conflict; he readily admitted to acts such as taking ears or scalps of fallen enemies as “trophies”, and there are hints that he does not restrict his actions to the battlefield as well.

It is the finding of this board that codename: Wolverine is the superior candidate from a psych standpoint. There are less risks of new psychological trauma being inflicted. There are also less issues with the projected processes of controlling the subject with mental blocks and sustained administration of psychotropic drugs. We project a minimal chance of lasting psychological damage to the selected soldier, with no long term projected issues.