It reminds me of when people say GW is the worst president ever (or Clinton, or Reagan, etc.) There were some truly horrible presidents, most wouldn't know (or care to) because they didn't live through their terms.
War of the Worlds is fairly new and until recently was somewhat popular, and while maybe not a great or even especially good movie (depending on your tastes,) putting it on a worst ever list means you've either seen a handful of movies in your lifetime (and have never seen a genuinely bad one,) or have singled it out because you saw it recently and didn't particularly enjoy it. New and disappointing? Maybe. One of the worst ever? Nope.
That being said the Matrix sequels (Reloaded and Revolutions) were the two worst movies ever made. Before you reply saying how ironic that claim is given my post keep in mind that I will respond with "Shut your face up."
I just put TNT in your britches and my tongue in your bitches.
Worst movies ever.
Have a good one.