I'm not sure anybody means to come off that way, except maybe harmony, who uses WAR and projected WAR more than anybody I know, but I can see how it sounds like that.
I'll ask this, sometimes someone will say so-and-so is slumping, and I'll reply, but so-and-so has a .875 OPS over the last 7 days, .900 over 14 days and .850 over 28 days. That may sound like a debate ender, and to me, it does end the debate, because it proves the guy is not in a slump, unless you count a 2-6 day sample size as worthy of calling a slump.
Would someone argue why does OPS ends the debate?