Deutsche Bank is building an Ethereum L2 blockchain called Project Dama 2 based on the ZKSync Stack!

What did Pi Pi say? ZKSync mainly represents a more advanced technical route for L2.

The advantage of ZK Rollups over Optimistic Rollups lies in its use of zero-knowledge proof technology, providing higher security and privacy while achieving instant transaction finality without the need to wait for a challenge period, which means faster fund withdrawals and lower fraud risk.

However, OP's SuperChain has recently been working on some interoperability innovations, which is also great!

But it's highly likely that the technology of L2 will migrate towards ZK in the future. If I remember correctly, Optimistic Rollups have always been considered a transitional phase!