Oldschool Blueberry vs. Newschool Blueberry outdoor

The plants have stretched a lot in the last week. The cupcake is the largest with 2.20 m, followed by the blueberry with a good 2.00 m and the pancake with its beautiful red leaf stems is 1.90 m tall. These varieties start flowering very late in my region. Now it depends on the summer. I hope the weather will remain stable in late summer without continuous rain, like the last years. Weather is still very sunny, in the evening it is slowly getting a little cooler. There is almost no rain at the moment. I water 10 L of water per plant every 2nd day.