This contrasts with what appears to have been the panicked response of the crew to the emergency encountered on ET602. It would appear that the two situations were quite different, or at least manifested in a significantly different way, or less likely (hopefully), the crew was not adequately briefed on how to correctly respond to a malfunctioning AoA vane induced MCAS-trim-response.
But I think the Lion Air flight had a bit more altitude to play with when the problem manifested itself, hence less panic??