Well, that is one way to look at it.
However, the IRS is a part of the Executive branch. They have not ruled -- in a judicial sense -- as to the nature of bitcoin. They have stated that _their_interpretation_ of the regulations (CFR), which are in turn an _interpretation_ of the statutes (USC), has led them to issue the _guidance_ (not even binding upon taxpayers, nor the Tax Court) that bitcoins will be _treated_ as property for the express scope of administering the tax code.
This particular court (a single US Circuit?*) has made the judgement that bitcoin should be treated as 'funds' within the application of the money laundering statutes. (*part of the Judicial branch - this is an article III court, right? IIRC)
If the scope of each ruling were universal, these would be interpretations that are in conflict. But their scopes are narrowly defined.
If the SR judge's ruling withstands all appeals, then her ruling that bitcoins are 'funds' for the purpose of the money laundering statutes will become precedent - albeit only within that District, or as high as the appeals process rises.
Guidance from the IRS is legally worthless in any event. Though it does provide ... err ... guidance on what the IRS position is likely to be in any action against a taxpayer - again appealable all the way through Tax Court, US Curcuit, US Court of Appeals, and USSC.
Bear in mind I am merely regurgitating what I believe to be - IANAL.
Edit: emphasis on _treated_