Cool vids Mike!, definitely a lot of Great action there. Especially in the take down of the worm.
I love how much size you've been able to pack on these! Definitely doing really well for so young.
Just a hypothesis about the horn size, I see what you mean the one that eats worms does have better formed
and more protruding horns. It's probably due to the large amount of raw protein in worms, it uptakes quick and digests fast with no bone material or chitin to dissolve. I know in us humans protein intake is directly related to cell growth (at least within genetic limit) and since these two frogs have the same parents and are the same batch of eggs, you can mostly rule out it being a genetic difference between frogs.