Furthermore, although the base math is correct, it does not account for failed breeding. Let's say the calculator gives you a 30% chance, but the failed breeding possibilities all yield 10+ hour breed times. Another combination may have only a 20% chance, but that combo's failed breeds are all less than 4 hours, with a high probability for 30 second fails. Using the calculator, you would think the 30% combo is 'better', when in fact, the lesser chance of 20% is in fact the faster, more effecient way to breed.
Maybe one of these days I'll compile my math into a java utility or something, but I just calculate on the fly as needed....144 is a mathematical number ya know