Bitcoin cash is 8mb block, bitcoin is 1mb. I also feel hashrate is high enough we could even change block times.
Discussion
Bitcoin Cash is effectively 32 MB.
Bitcoin is effectively 4 MB
But this can be changed without forking. In the future. And what about block times.
The block time target of 10 minutes helps with decentralization as the blocks can be propagated and validated and still leave a fairly level playing field for mining blocks to attain initial subsidy and transaction fees.
Changing the block time would likely be much harder than the block size as it influences the rate of subsidy issuance. Making it shorter would cause issuance to run out before the initial assumed timeline. Making it longer would extend it making miners less profitable.
The typical naive assumption is that faster block times are better to allow for more transactions. But this trends to centralization. The converse, slower blocktimes, allows for the center of hash to be larger in the universe. Right now it's impractical to mine Bitcoin from as close as Mars. Not because we dont have miners there, but because of the time it takes to roundtrip information about a found block would cause those on Mars to be behind. If block times were an hour, then miners on Mars could compete.
There’s a whole book written on why you shouldn’t 😄
https://blog.bitmex.com/the-blocksize-war-chapter-1-first-strike/