In my opinion, there are some very significant game design choices that really open the game possibilities for Humankind that just don't translate to VP, even if the software itself is still getting optimised/debugged etc. In regards to the AI itself, it's certainly not perfect but I think on day 1, Hk's AI is leaps and bounds ahead of Civ 5's day 1.
For example, the Era Culture system is really interesting you essentially get a new set of UA/UB/UI every era. VP is really constrained by having to choose 1 culture to play as for eternity. Instead of rerolling a map to get the perfect broken start for the Civ chosen at the beginning, you have to really interact with the land around you. Your first city is very rarely where the game decides to spawn your starter unit. There is strategic tension from turn 1: do I settle my first outpost right away or do I scout for better terrain? Do you want to split up your units to cover as much ground as possible or do you stack them up for a mammoth hunt? If you split up too thinly, your lone nomads are vulnerable to your neighbors who might have kept their tribal doomstack. Every unit costs 1 pop to create and can be disbanded back into city pops so losing even 1 unit early can make a big snowball difference. Not spreading enough can cause you to miss out on science and influence from curiosities and spawning animals. So before you choose your first culture, you've made a lot of decisions that have consequence for the rest of the game.
City states are also not a static diplomatic center of power that spawns and settles turn 1 and stays there for eternity. Independent people crop up naturally in unclaimed land. Some will be aggressive, some are peaceful traders. They can be assimilated diplomatically or militarily or ignored until they eventually decline and die out.
Luxuries and Strategic resources have to be actually transported via trade routes, no more instantaneously teleporting 5 iron across the map in ancient era so geopolitical unrest can interfere with critical resources. Luxury benefits stack so you have to consider your reserves, no more keeping 1 copy of lux for all the benefit.
I will admit Science and Religion are pretty weak for Hk, not much to defend there.
Overall, it may not be as perfected as VP but so far the devs seem receptive to their community. Just a few hours ago they
announced a patch for reported issues and are already planning more balancing so I think the game will continue to improve