Tires, 23's vs. 25's, brands?

[Veronica]

---Wide tires do not roll slower at lower pressures. In fact, testing indicated that a wide tire at lower pressures rolls faster than a narrow tire at high pressures, if all other factors remain the same. Even narrow tires can be ridden at comfortable pressures with only very small concessions to performance.

I have a really hard time believing this one and I wish they had given some numbers. What exactly do they mean by high pressure and low pressure? I guess I'll have to read the article.

My personal experience is contradictory to this.