Whether or not you can "out run" a storm is nothing more than a matter of semantics. That is, an argument over what we mean by "out run". Many storms move faster than any sailboat can every hope to go, and even faster than most powerboats. Hence, in terms of running faster than the storm, and "out running" it in that sense, no, you probably can't. At least, not unless it is a VERY slow moving storm.
But that's not what most people mean when they talk about "out running" a storm. What they actually mean is turning away from the direction the storm is moving and getting clear of its path. Letting it go past them, while they avoid the worst of it. They're not trying to go faster than the storm. They are just trying to get out of its way.
Whether or not you can do that depends entirely on how fast your
boat is, how early you identify the threat, where the storm is, and where it is moving at the time that you decide to try to avoid it. Given the right circumstances, most boats can "out run" a storm in this way.