Except that Bitcoin can be laundered quite effectively, and often is. [1] In fact, there are services that do so. [2]

[1] http://bitcoin.stackexchange.com/questions/72/how-is-it-poss...

[2] https://bitlaunder.com/

Try and launder a 1Billion to 10 Billion dollor transaction with bitcoin and that's going to fall flat.

PS: For comparison you can fedex ~170,000$ worth of gold in a vary inconspicious 15 LB box. Shipping ~60,000 lb of gold (1Billion$) is much easier to track and more risky.

There is no possible way to make gold inconspicuous. The density simply prohibits it: gold reflects easy-to-send parts of the EM spectrum that most anything else will pass.

Your assuming there is a test in place to detect gold in FedEx packages. That's not acutally a hard thing to test and I would be interested in the results.

That doesn't mean it's ridiculously easy to attach a transaction to a specific person. If it were, sites like Silk Road would never even exist.