100k TPS on testnet. You guys must be glowing, right?

How many nodes were involved during the test and what was the nature of the load? I've seen testnet TPS of 200k only to translate into sub 1000 TPS after mainnet launch.

And what's a PoT - Proof of Tsar? You're presenting it as if it's something novel when it's just the same old Byzantine Fault Tolerance using epochs to shuffle leadership