If the 'average player' doesn't experience any difference between 96% and 94%.One thing here which is an important thing. The average player will not lose more money by changing the RTP from 96% to 94%. But maybe 1 of 1000 player will win less money on a big/medium sized win. Instead of paying out 2500x it might payout 2250x ( these are examples and numbers are imaginary ).
Then why is Bonus and XP wagering tied so tightly to the RTP percentage at VideoSlots?
96% = 100%, 94% = 150%
The extra 50% is only there to 'compensate' for the lower return and less spins.
It's not like VS are giving extra away for nothing.