Easier than quantum mechanics
This particular piece of marketing spin is supposedly around an "independent" study done on SAP BW and Oracle Warehouse Builder implementations at various sampled customers. I have to say I suspect that the study might just be paid for by Oracle, though that is not stated, given that this same market research firm also brought you articles such as "Oracle is 46% more productive than DB2". We all await with bated breath further independent research pieces showing that "Oracle solves world hunger" and "Why the world loves Larry".
However, in this case I don't doubt the veracity of the material (much). SAP has become a byword for complexity, with up to 45,000 tables per implementation. Business warehouse is not quite on this scale, but still involves lots of juicy consulting hours and most likely some programming in ASP's own proprietary coding language ABAP, which I am proud to see that I once took a course in (think: a cross between IBM assembler and COBOL). I haven't got direct coding experience with Oracle's tools, but I have to assume that they can't get murkier than this.
High tech marketing has come up with some entertaining headlines and slogans over the years, but "easier than SAP" is definitely my favorite in 2006 so far.