twitter api: What is the difference in following urls

Who can comment the following:

import json, urllib
url = "funnyfurniture.net/p/10/oops-chair/"
url2 = "http://funnyfurniture.net/p/10/oops-chair/"
tw_url = "http://urls.api.twitter.com/1/urls/count.json?url=%s" %url
tw_url2 = "http://urls.api.twitter.com/1/urls/count.json?url=%s" %url2
js2 = json.load(urllib.urlopen(tw_url))
js = json.load(urllib.urlopen(tw_url2))
print js2, js

Gives

{u'count': 0, u'url': u'http://funnyfurniture.net/p/10/oops-chair/'} {u'count': 1, u'url': u'http://funnyfurniture.net/p/10/oops-chair/'}

What is the difference??