-WabiSabi doesn't leave behind unspendable toxic change like Whirlpool, your entire balance is broken down into private amounts

-WabiSabi has much larger coinjoin rounds (150-400 inputs) than Whirlpool (5 inputs), meaning you gain much more anonymity per tx transaction fee.

-WabiSabi allows on demand remixing. Over 95% of WabiSabi coinjoin volume is coming from a previous coinjoin round whereas the remix ratio is fixed at 60% for Whirlpool.

-WabiSabi allows inputs to be consolidated in a coinjoin without revealing they belong to the same wallet. Whirlpool consolidates inputs in a self-spend transaction, linking them together.

There's a Twitter space hosted by Bitcoin Magazine today that will go in depth comparing the two: https://twitter.com/wasabiwallet/status/1640769217879506944