Transaction speed

• both 100+ Tps

You mean transaction throughput (how many transactions per second can be confirmed total), not confirmation latency (delay) for each transaction (which can occur in parallel for many transactions) which is an separate issue.

The limitation on the throughput in Byteball is that the 12 witnesses have to validate all the transactions. This is why the set of witnesses must be small and carefully selected/anointed (which is a serious flaw and risk…see link below). This also limits the transaction confirmation latency (delay) as well to “~30 seconds” which was qualitatively confirmed by Byteball author @tonych.

There are many more flaws in both Byteball and IOTA.