If they both do not have LMIA,and the clerk has MORE points (for any reason: language, age, experience etc.) - the clerk will get ITA.
CIC will not avaluate anybody "personally". Applicants will be chosen BY THE SYSTEM itself from the pool according to their points. When all applicants with the highest points in the pool will be chosen,and IF there is still need in more ITA to be issued then the system wiil pick from the lower ranked applicants, and then (it is an interesting moment!) if there are two applicants with equal points- the system will pick the one with the earlier date of application. (At least that is how Australian system works).