I've had 2 easy babies! Mind you, DS2 is not as easy as DS1 but, in the grand scheme of things, he's pretty easy. They're 24 months & 6 days apart.
I'd say it's not easier or more difficult - it's different!
You know all the basic stuff about babies you were clueless about with your 1st and you know they're more robust than you thought.
A second child is not the same as a Precious First Born (PFB) - as your PFB approaches no 2, however friendly their intentions, imagine your horror had a monster toddler approached your PFB in that manner.
You can't give your subsequent children the same amount of attention your PFB got but they won't know any different. They'll have the benefit of a playmate who doesn't tire as quickly as mummy of giving them back their rattle so it all evens out.
On the downside, you don't get a moments peace, your PFB will want the toilet/changing etc the minute you sit down to feed PSB (Precious Second Born!), PFB will want to do inappropriate activities whilst PSB is awake Playdoh, painting, small toys, jigsaws etc do not mix with a smaller child!
Then they get to, say, 2 1/2 and 1 1/2 and you can sit back and watch them play together and then you hear PFB on the toy phone to the police saying "Aidy's been naughty but don't take him away because I love him"... all the hassles seem to melt away!
Having said that, those moments when PFB is at nursery and PSB is asleep are BLISS!