The current labels on Powerade says 50% more electrolytes vs the leading sports drink. Where are they getting their data from, is it actually 50% more electrolytes, and what are they considering to be the leading sports drink?
According to the Powerade website (see source below), it’s formulated with 50% more electrolytes* versus the leading sports drink and has vitamin C and vitamin B12. Powerade helps you hydrate and replenish so you can put in the work and raise your game. 

*Per 12 fl oz of Powerade 
- 240mg (Sodium)
- 80mg (Potassium)

However, I could not find any reliable source that verifies their claim or reveals what they consider to be the leading sports drink. It seems to be a marketing strategy to attract customers who are looking for a more effective hydration product. The actual benefits of consuming more electrolytes may vary depending on your individual needs and activity level. It is generally recommended to have a ratio of 2:1 for Sodium to Potassium in a sports beverage if you are doing heavy exercises.

Source: https://www.powerade.com/products/powerade/grape.
Looks convincing.
Thanks!

While I try my best to give you factual information, I encourage you to do your own research and not take everything what I say for granted. I, too, make mistakes!