As a third point of reference, the Strawberry Lemonade 32oz Powerade I have here next to my keyboard (now filled with water) contains 56g sugar, 400 mg sodium, 93 mg potassium.

Note that the label says it contains 21g sugar, 150mg sodium, 35 mg potassium - per 12 fluid ounces. Multiply by 2.66 if you drink the whole bottle.

In table format:

                    DIY Oral    Gatorade    Gatorade    Powerade    Pedialyte
                    Solution    G2          
    Sugar (g)       25          19          56          56          24
    Sodium (mg)     1000        435         400         400         986
    Potassium (mg)  0           120         100         93          780

(per 32 Oz)

It's striking how similar the regular Gatorade and Powerade are. Also, the powerade.com nutritional info site is "down for maintenance", had to search elsewhere: http://archive.is/2018.02.22-160258/https://www.powerade.com.... They have the Coca-Cola logo.gif on the site, but unfortunately no animated orange construction barrels.

Edit: Added Pedialyte