How are they different? Both the article and the wikipedia link you gave mention they are similar experiments. It seems they are the same experiment to me.
They're similar, yes, but they're aren't one and the same.
GP is pointing out that there are two experiments underway.
The Queensland experiment was mentioned in the article. The GP is confusing because it insinuates that something wasn't mentioned which should have been.
The theory is that the Australian one will drip upside-down
That's how we get the pitch into the funnel in the first place!
Same experiment, but I for one was interested to know it was not the Queensland one, because that one has a great Radiolab episode about all the times they missed the drop (webcams failing, etc.). Their pitch is due to drop soon too, so it's sort of sad someone else beat them to finally filming it.
Sounds like the pitch may actually contain the Higgs Boson, and it is going back in time and creating events designed to make the monitoring fail. The failing webcam was the proverbial bird that dropped bread into the coolant pipe.
They didn't really record a 'drop', the tail was still connected, so the experiment is still on.