I personally could never decide between VR and DW
Both offer an amazing experience and cater to everyone regardless of whether you are a thrill seeker, animal lover, have a family or just love the atmosphere
When it comes down to rides you can't really argue between them. They both offer some fantastic rides and some not so fantastic rides. This however is a personal preference.
The only preferability is the fact at dreamworld you have all the experiences within walking distance, where as with VR you have a distance between the parks.
However this lets them have precise visions for each park where as with dreamworld sometimes it feels a bit messy with theming.
Today, tomorrow, 25 years from now, this debate will never end because in reality it is all down to personal preference. Heck some people may argue Luna Park is better then DW or MW... (Jokes aside aha)