I am a longtime fan/proponent of VRoom, and more recently, VPlate. But let me try and set the rah-rahs aside and put it into practical perspective.
It basically comes down to the length of the reverb tail and how up-front the effect is. The shorter the decay, the less difference you notice from one reverb to the next. The louder the wet signal, the more differences you become aware of. The brighter the wet signal, the more likely you are to hear artifacts in less-capable reverbs.
Many of VRoom's rave reviews come from guys who love to drench spacey, ambient electronica in lush reverb. That's a demanding test because the effect is front and center. VRoom does well in that scenario, holding its own against far more expensive alternatives. For many, that's enough justification to hand over the fifty bucks.
But ambient electronica isn't my thing. Sure, sometimes a lead instrument benefits from a long, juicy reverb tail. More often, my goal is to make the reverb transparent. By "transparent", I don't mean inaudible. I mean the effect fattens the sound but the listener can't actually point to the reverb as the reason for the fattening. The more subtle the effect, the less obvious the advantages of one reverb over another.
At some point between in-yer-face and a whisper of air, it won't matter anymore which reverb you're using. But with VRoom you don't worry about where that cutoff is, because you'll know it'll do fine at any point along that continuum.