The OEM OPPO's Vice President, Shen Yiren, has reportedly sent Weibo messages to the effect that a new, improved version of SuperVOOC will be included in an upcoming device, the Reno Ace. This new upgrade will apparently charge at an unprecedented 65 watts (W). The Ace is also said to have a 4000 mAh battery and a 90 hertz display.
https://www.notebookcheck.net/OPPO-is-slated-to-debut-65W-charging-in-the-Reno-Ace.434773.0.html
If it only stays at 65W until 50% again, then it's, again, a matter of diminishing returns.
The actual difference is really insignificant.
Moreover if you run out of battery and need a quick top-up it's unlikely you'll have the compatible charger with you or come across one. It's a different case if this is 65W PD(for some reason non-existent on smartphones), which has far wider compatibility.