Yep, same stuff mate. I'm reasonably sure the tas home brewing supplies sells tassie grown cascade hops, which may not be what the OP used, but they should be pretty close. As far as i understand, hops can vary in AA% which changes the bitterness you get, so if you want to get as close the the original recipe, maybe pm the OP and ask him what the AA% of the hops he used were. To be honest, it probably wont make a massive difference though.
the number before the EBC relates to the colour of the grains and the colour and flavour they will give the beer.
Again this may vary depending on the supplier, but from what i understand:
60 ebc is light crystal
120 ebc is medium (the most common one I use, and i reckon its what the OP used too)
270 ebc is dark crystal