Experience section is listed directly after the objective section in resume. This format is used when the person with sufficient work experience in similar field is applying for more superior position in other company. In this case, with such extensive experience, employer will consider that the applicant already possesses the job related skills and does not waste his time on viewing this section. Your relevant work experiences will win you the desired job.
Functional template is used when the applicant has considerable gaps in his work history. These gaps make a bad impression on employer and hence should be hidden. This format is more focused on the skills rather than the experiences of the applicant.