DS1 - average. He was an average baby sleeper (typical newborn shenanigans, but STTN without sleep training, had relatively low sleep needs). He was probably also an average toddler sleeper too. Shorter than usual naps, but STTN and slept 10.5/11 hours overnight. Preschooler, again probably average! He gave up his nap on the early side but we didn't have any major sleep issues.

DS2 - average. Below average (i.e., terrrrrrible) infant sleeper. But a very good toddler sleeper, sleeping 10.5-11 hours overnight and an excellent napper! So I guess they balance out