Blueberry Muffin + Planet of the Grapes

Off to an interesting start. The planet of the grapes is looking good and growing strong. The blueberry muffin on the other hand is not looking as good. Both have been in the same tent from the beginning, both are planted in happy frog soil and have been watered with the same pH water. So I'm kind of confused why one is thriving and the other is struggling. We will see how they look in another week.