Perhaps we just have different technique, my experience is that of a quite spinny rubber, though it is felt better when you hit with more power. I can get pretty much the same spin out of AK47Y as from the Vega Pro, but I will have far fewer unforced errors with the AK47Y, which to me implies more spin.
The difference being that the vega-pro has better grip on low energy balls, so serves are easier to keep short and spinny, but it is also faster and less spinny for me on topspin shots. In comparison, the AK47Yellow is more linear and very, very spinny when you dig in the sponge even a bit.
Also the difference in weight can be around 15grams for a single sheet which is ridiculous and definitely helps with dexterity and swift acceleration for getting even more spin, but requires a firmer grip on the racket, because otherwise you can lose stability and the vibration takes away all your spin, which can easily happen when your racket is lighter than ur used to.