I'm sure anyone with magical unicorn babies of any quantity has an easier time than those with tough babies, but in general terms having two babies that need you and need lots of things is exhausting even if they are good feeders and sleepers.
I have a big circle of twin mum friends and I know only one that went near term. All of the others had their twins significantly prematurely, some as early as 28 weeks. 90% of the twins I know, at least one of them has significant health issues, has needed at least one surgery or procedure under GA, has an ongoing illness or issues associated with prematurity. At least half the mums needed emergency sections or hospitalisation after birth. One of mine was in nicu for two months, others have had nearly that long and one or two longer. The majority of us had severe SPD from early on, hyperemesis, GD then pre-eclampsia or other conditions more common in multiple pregnancies.
Dealing with all that for one baby is hard enough, when you have more than one the likelihood of difficulties for mum and babies increases, and dealing with all this with two babies is a logistical nightmare.
If you had two term babies who sleep through from the get go, stick to a schedule then wonderful (although there are still the additional logistical difficulties of having two babies at once) but with all the twin mums I've met through my sizeable local twin group, I don't know a single one with that scenario!
I just mentioned this thread to a couple of the mums I know who have twins and a singleton - they both found it pretty hilarious. One of them has boisterous 3 year old ID boys and a two month old boy, and even she with the added workload of toddler twins thought it was hilarious.
There are always exceptions to every rule, I'm sure someone out there has angelic quadruplets that are no bother and are easier to handle than my ravenous, sleep-allergic escape artists, but in the vast majority of cases it's only logical that the more babies you have, the more exhausting it is and the more work it is.
But if anyone wants to swap my twins for their singleton for a week, be my guest - you'll need to learn how to monitor blood sugars and give medications / react to results, but I can teach you that 