Complete details about Shell V-Power are available at:
https://www.shell.com.pk/motorists/shell-fuels/shell-v-power-unleaded.html
Here is the crux of it:
Shell V-Power Unleaded is formulated with powerful cleaning agents to prevent and remove performance-robbing engine deposits or gunk, helping your car to perform at its best. New Shell V-Power Unleaded is an innovative new premium formulation. It is designed to protect against gunk and corrosion, and is now available in Pakistan.
The formulation of Shell Super Unleaded with Fuel Economy Formula and Shell V-Power Unleaded performance fuel is different, the latter being more highly formulated and having a higher octane quality and designed to improve performance through advanced technology. Shell Super Unleaded is designed to give you extra kilometers.
(What??? 
Generally speaking, general public (including myself) thinks that High Octane gives more fuel efficiency, but here, as per my understanding, content speaks opposite. V-Power gives more performance, whereas, Shell Super-Unleaded gives more fuel economy. Fuel economy has been discussed with Super Unleaded, and Performance has been related to V-Power.
I will try to experiment with both, and then give my final thoughts based on my experience. IN SHA ALLAH)
Shell V-Power Unleaded is designed for use in whatever type of gasoline car you drive.
Shell V-Power Unleaded is designed for use in whatever car you drive. It is formulated to help control the build-up of deposits in new engines and help remove deposits in older engines that less advanced fuels may have left behind. It is critical that any new fuel that Shell brings to market will not affect the environmental performance of any vehicle and the technology in Shell V-Power fuels has been tested in line with our no-harm protocols.
(Those fellows who think that High Octane may be used in 1KR-FE on long routes / high speeds only, and not in city traffic / short routes / slow speeds, etc., please reconsider.
Shell itna bara claim, publicly and openly, aesay hi nai kar raha ya kar sakta!
If it is saying whatever type of gasoline car you drive, it means Shell V-Power is safe for its use, in any sort of driving conditions, and engine.)
Shell V-Power Unleaded is formulated using a range of fuel parameters and additive options, one of which is octane number. In Pakistan, Shell V-Power Unleaded is a minimum of 95 RON. The octane number of Shell V-Power Unleaded is just one of the technologies used to give its superior power and performance benefits compared to Shell Super.
The octane level of a gasoline is often considered to be a quality index that enables the customer to distinguish between premium and regular grades. Higher octane fuels are more resistant to auto-ignition (knock) in a gasoline engine. Through the engine management system modern engines are able to detect combustion quality (knock) and engines often adjust their settings (ignition timing) to exploit higher octane fuels such as Shell V-Power Unleaded. This adaptation of the ignition timing allows higher octane fuel quality to be exploited, which can result in improved power and acceleration performance of the engine. Shell V-Power Unleaded contains a powerful detergency formulation designed to actively clean up the engine from (and prevent the formation of) power robbing deposits. This helps the engine to run under optimal conditions and deliver its performance potential.
