All aside from which.... if a TCAS RA ( one assumes that both aircraft involved where equipped with and using TCAS ?! ) is complied with in the correct manner it is actually a very gentle manouver, one which shoud barely be noticed by the passengers - wherein a Chuck Yeager styled max climb / max dive it is not ! .... of course if one chooses to diregard the TA, the RA, and subsequently has to manouver out of the way, that is a different matter.