Thanks for link, when checking some of your gamertags, I see many of you seem to not be sharing your presence, which then won't update your gamerscore. I've also just modified this slightly so anytime you search a gamertag, that tag will be queued for an update.
100 k gamerscore and only in 40 k place . hmm . top 100 all have half a million gamerscore . only one i know is legit is first place stallion because hes going for 1 million and he made his progress public . hes kinda famous . no big deal .