The point being, the added sugars will probably come to 20-25 percent of the daily allowance if you drink a single bottle of beverage. At the same time, it will not be seen as "high in sugar" because, hey, the serving size is only 250/330 of a bottle, so the sugar level is below 20 percent. [Sophisticated level of duplicity]
Most people are not that careful anyway - they might glance at the nutritional label, and see that the sugars are only 7.5% and think: that's pretty good, I'll have one, not seeing the 100 ml gotcha. [Basic level duplicity]
The only thing that will alert you is the cloying sweetness of the drink which will cause you to pull out a calculator and see what that small bottle is going to really cause.
Processed foods (snacks and beverages) in India seem to be very high in sugars, sodium and fat, more so than the same brands available elsewhere.