This is a great question - but no, there is no similarity - or, there shouldn't be! But many meditators do seek this "spaced out" state and that's not it. In fact, many meditators wrongly assume that they should be "emptying the mind" or "having no-thought" which is just ridiculous. However, with this human mind and the power of this intelligence, we can select and maintain what it is we are going to think about, which, if done methodically, will result in the ability to achieve heightened states of single-pointed concentration which will induce insight into the nature of reality which will produce physical and mental pliancy - far from the escapism you've described. In fact, one with the correct intention for cultivating a meditative practice will be dealing with reality far more than they will be dealing with non-reality. Things get sharper and more vivid to the meditator who has done the requisite study beforehand. Otherwise, one would not be meditating on anything! The etymology of the word for meditation ("goms" in Tibetan) means familiarization. This is engaging the mental consciousness in analysis of a given subject or object of observation over and over, until the apprehension of this object of observation becomes somewhat uncontrived. So, no, there is no room for dissociation in meditation.