One who primarily trains calmness mediation is freed by mind
(ceto-vimutti)...
So was Ven. Mahamoggallana...
One who primarily trains insight mediation is freed by understanding
(panna-vimutti)...
So was Ven. Sariputta...
One who trains both calmness & insight mediation is freed both ways
(ubhato-bhaga-vimutti)...
So was the Buddha and some of his disciples...
The state of mental release is though the same, just like the
same mountain-peak can be reached by 3 different paths...