Again, 'solid state' is a marketing term. There are lots and lots of different things that exist under the larger term 'solid state'. And they have different properties.
And in traditional liquid batteries there are also a number of changes happening that change the behavior of the battery under these conditions.
Making judgment on that stuff based on small scale lab test just doesn't really hold up.
These batteries all have to go threw automotive testing. And by the time they are actually commercial, then you can compare them to the newest generation of liquid batteries. And then maybe the perform slightly better or maybe not.
