Well iSupply is being dishonest in forgetting to mention manufacturing costs and all that other over head that goes into making the device but from a purely materials perceptive they may be correct.
The third sentence reads "This total comprises only hardware and component costs for the Nexus One itself and does not take into consideration other expenses such as manufacturing, software, box contents, accessories and royalties."
Your accusation seems spurious at best. Some might call it dishonest.
iSuppli isn't responsible if daringfireball (or anybody else) mangles their actual statements.
I'll stand my statement that you are dishonest, and at your suggestion I'll add an addendum that you're exaggerating the scope of iSuppli's responsibility.