Replacing mathematically provable cryptographic assurances with a human fallible cabal of BPs hardly seems like an advancement.

In any case, Bitshares TPS was less due to DPoS and owed more to the limitations of what tx were supported.

Ethereum chose to support greater contract flexibility which turned out to be what the community of users wanted more, at least then.

We've yet to see a real solution to the problem of having to tradeoff performance for decentralization (while keeping security.)