My thoughts:
- Unless there is a strong upward trend, your 3.6 GPA is below average at most 'top' schools. Until you know your MCAT score, no one can give you a realistic idea of your chances.
- As a general rule, good ECs do not make up for non-competitive GPAs and MCATs, hence others' advice to focus on those first. Provided you do well on the MCAT, your ECs are sufficient to get you in the door somewhere.
- It's difficult to gauge the strength of your ECs when everything is so vague -- it's not just about the hours, it's also about what you do and accomplish with them. e.g being a student leader in a nationally-recognized organization who spearheaded initiatives to help the poor, hungry and homeless is different than being a student leader of a club of 5 people who held monthly meetings all to just organize a yearly bake sale.
- Someone who has dedicated time to a few select organizations can usually tell a more coherent and compelling story than someone who has dabbled in a bit of everything. Someone who has participated peripherally in many organizations may appear like they're padding their CV and just going through the motions.
- "Top" schools have the luxury of picking from a large group of very accomplished applicants. Having a compelling story helps separate one from the crowd. The applicant you referenced would have benefited from some additional hours in either clinical or research experience, but they otherwise had a very solid app. I wouldn't be surprised if he/she did end up getting some T20 offers.
- Admissions is ultimately about probabilities. Just create the best application that you can instead of comparing yourself to others.