<p>you can be sure that stanford doesn't have anything against ranking amongst the top nationally - they just want to see you're good at things other than studying, too. i can't speak definitively, but usually people who get in such colleges tend to fall within one or a few of the following categories:</p>
<ul>
<li><p>the renaissance man. strong (but not stunning) academically and consistently great but not necessarily stunning ECs since they were babies. within the school, they just do better and put in more effort than the others in typical ECs available to everyone else - they grab and build on the common opportunities well and make an outstanding track record out of typical stuff. people do get in by being consistently great, even if not the best, in every aspect - academics, ECs, community work.</p></li>
<li><p>the specialists. they invest the majority of their free time in a passion, usually outside of school. there's a profile of a person on these boards somewhere - he or she basically ran a successful bakery and was just above average in other activities, and got into Yale, with good grades, of course. it could be science, research, charity. even better if its something unique.</p></li>
<li><p>the writers and charmers. they can basically take their very average profile and present it extremely appealingly. or they're able to write very impressive essays and entertain the adcoms well with their anecdotes, presenting their personality and ECs clearly and expressively. and not to mention wonderful alumni interviews, which do help, even if not overwhelmingly.</p></li>
<li><p>legacies, children of rich, famous and connected parents, certain URMs, recruited athletes and more</p></li>
</ul>
<p>there's no need to compare yourself with the applicant you mentioned. maybe he was consistently active outside of studies, or maybe he wrote great essays, but you can only guess. remember to apply for stanford's SCEA, it helps greatly. </p>
<p>just a note - my friend, an international from singapore, got in through stanford's SCEA. 2260 for SAT I, 2400 for SAT II (phy, chem, mathII). he was never the best in anything but was just consistently good in everything he did. he's always been only in clubs (as president) and student council since secondary school, or seventh grade in american terms. he won many national competitions for his computer club (no international olympiad in informatics) and had good grades. he's never been in any sports officially, not to mention competitively - the only one he was involved in was badminton at a recreational level. nobody said you needed sports to get into HYPSM. just be regularly very good in what you do.</p>
<p>you still have a year to make your impact :D two years of social life? it depends on what you want and what makes you happy. if having great friends is more important and healthier for you than getting into stanfordish schools and getting a branded degree, then its probably not worth giving up your social life. but nobody said you can't make friends in your ECs. and anyway, this is seriously a once in a lifetime chance at stanford undergraduate. i can tell you now that personally, i wish i'd given up the last few years of social life in exchange for a HYPSM undergrad experience and degree.</p>