A few things to keep in mind: Infants and toddlers, as well as small children to a lesser degree, have very efficient and fast digestive systems, much the same way they heal very quickly. Everything seems to be at "peak performance". In any case, this makes their sugars spikier, but short duration. This is why pediatricians are much more concerned with preventing post-prandial hypos hours later than short, close-in post-prandial spikes.
Also, kids are much, much more tolerant of high BG, not experiencing glucotoxicity at brief high levels that adults -- the older the more sensitive -- are subject to. This is why doctors are generally unconcerned with brief exposure to hyperglycemia in child diabetics. Their bodies tolerate the high BG better, without damage, than adults.
On the other hand, hypos are hard on the nervous system, so there's a bias to avoid hypos at all cost for rapidly developing brains.
In summary, the overall physiological differences between young children and adults indicates different priorities in treatment protocols. While keeping BG as "normal" as possible is always the goal, and large excursions should be monitored and documented/recorded for every diabetic using insulin, how one responds to treatment and its side-effects changes with age.