Paths of Buddhism & Possibility of Compassion

I have read about different types of paths for spiritual aspirants. Namely: > - Śrāvakayāna > - Pratyekabuddhayāna > - Bodhisattvayāna Of the first, Asanga states their faculties are limited: > "These people are described as having weak faculties [...]" Of the second, he states they have medium faculties: > "[T]hey are said to have medium faculties [...]" Finally, he describes the bodhisattva as with sharp faculties. In the Sutra on the Ten Levels , it says the *sravaka* will have practised: > [...] through fear of cyclic existence and without [great] compassion, [...] ---------- I know that this is mainly a Mahayanist view. Nevertheless, my questions are : **(1) Should I conclude from this that faculties can really be different between practitioners? That, some individuals have greater facility for the dharma, and that enlightenment is not always feasible in one lifetime?** **(2) Does this imply that following a Buddhist path doesn't always result in great compassion? Can one follow a Buddhist path while neglecting compassion, and end up lacking it in the end? Or, can compassion always be developed, even at some later point?**