How buddhist meditation leads to liberation?

Buddha taught meditation to develop concentration, calm of the mind to finally experience nibbana. Other religions (Hindu yoga, etc) also taught meditation. So in which way Buddhist meditation is different? and leads to end of suffering? If I'm not wrong, if someone is absorbed in concentration, whatever religion does not matter. since there is no thought during absorption. Please explain if possible in terms of 7 factors of awakening, 8 foldpath, etc...