As a mom who has done both, Id never tell anyone that breastfeeding is easier.
I nursed DD until 18 months, and it was easy peasy after we hit 6 weeks. Although, until she was one she never slept longer than 45 minutes at a time.
I nursed DS for his whole life and we never had a problem.
My twins were preterm, and I EPed for them for 8 weeks, and then we switched to nursing. They nursed for a couple of months and I sat in a chair completely covered with babies while my house fell apart, my diet went to crap, my business fell apart, and my 3 year old was starved for attention. And as a result of all that, my marriage went into a terrible rut. SO, now we almost exclusively formula feed and everyone is much happier. And the first night we gave formula my twins have slept 8 hours at night, and have done so every night since, giving me the ability to (sort of) think like a human being again.
So, I am probably one of those moms who would have said that "breastfeeding is easier because you dont have to wash bottles or mix formula". And that was easy to say, never having done it myself.
Breastfeeding at night is easier IF you cosleep.
Breastfeeding is easier IF you arent constantly battling supply issues and feeling like you arent good enough.
Bottles dont really have to be boiled after the first couple of weeks and it doesnt take that long to clean them.
It's really not that hard to mix formula while you are half asleep. Put two scoops in the bottle before you go to bed and add water.
If someone asked me who was 9 months pregnant and considering nursing, of course I wouldnt tell them "oh, feed your baby formula, they'll sleep through the night," but I also wouldnt tell them how easy peasy nursing is- because every situation is different, every newborn is different.