Bitbucket plugin vs plain postCommit hooks?

[David Karlsen]

Whats the difference between the bitbucket plugin: https://wiki.jenkins-ci.org/display/JENKINS/BitBucket+Plugin

and  https://marketplace.atlassian.com/plugins/com.nerdwin15.stash-stash-webhook-jenkins/server/overview + jenkins git plugin?

Any whats the purpose of having an explicit 

triggers{
    bitbucketPush()
  }

vs the default postCommit activation of a job matching the repo?