PAtience grasshopper. Whatever the breeder said about how long it takes, ignore it. the plant does what it does. Nothing looks unusual here.
tip - stop thinking 'i did everything exactly the same' - doesn't matter. What matters is reality. And if the reality is the plant is taking longer, then it is taking longer, regardless of if things were the exact same or not -- most likely they were not despite our efforts to do so. Though in this case, i don't think that's related. this plant is merely slower to ripen than the other. this is normal.
If anything, looks like it may have needed a bit more light over its lifetime. bit larfy and leafy, but hard to be certain at this stage. Could just be more genetic variety. you'll know better as you harvest a greater number and variety of plants over time. Not all plants produce well or have a good leaf:bud ratio.