Define "Better", it could mean anything I think you need to judge them against some sort of criteria:
1- Suspension Performance - absorbing bumps controling the fork motion with damping?
2- Oher Non-suspension features - Lockout, travel/rideheight adjustment, anything which is supposed to help the rider get about more efficiently between the fun bits...
3- Weight - how/light/heavy are they?
4- Serviceability/maintainability - user serviceability/RTB only? - cost/availability of spares?
5- Cost of purchase - how much the things cost to buy in the first place...
In my opinion I think modern forks are not really that much better than those of 5-6 years ago really, that might sound like a rather sweeping statement (I'm sure there are exceptions) but lets face it there's not much out there today that is totally "New"...
Yes available travel has crept up (Although not everyone needs more travel) and features like lockout and travel adjustment have become more common but these sort of things have been available for over a decade now under one guise or another, there have not been any Quantum leaps, just incremental changes.
In fact not all modern forks offer that much useful adjustment of damping some still require a change in oil weights or additional "tuning" from stock hardly idea..
Modern forks do seem to be marginally stiffer and lighter, this is mainly due to more sensible placement of material in parts like lowerleg braces, and larger Dia Stanchions becoming more common, again though it'sbeen baby steps and a comparable fork from 5-6 years ago won't be a million miles away from current models in this respect...
In terms of Servicability I think things seem to have taken quite a step backwards, doing anything more than apply an approved lube to the stanchion of an RS/fox/Marz fork and then post it to TF/mojo every 6-8 months and if the Mag/markeing/forums BS is to be believed you'd be ensuring your own death, people don't seem keen on taking forks apart themselves to service anymore, I can't really blame them though when you look at the eyewatering sums they've stumped up for the latest greates fork I can see why you'd not want to chance ballsing up a £600+ fork...
I think the stupidly high cost of them is the biggest black mark against current forks, I'd rather see good, well specced, servicable forks where the features and weight maybe haven't moved on but manufacturers have managed to bring RRP down, rather than the current state of play where the Marketing Dept come up with a new Acronym for a pretty familiar concept an bang another £100 on the shop price...