Toyota Sienna 2021 AWD Platinum
I am glad you brought this up. My apologies if I sounded otherwise.They controlled it to make it fair for the FWD model who's output is 243hp - my guess.
Yeah I'm sorry about taking this thread but I thought its interesting to note it since the OP did ask about differences between AWD and FWD.
For what I care, even if Toyota doesn't claim it, I think this is a HUGE plus point. Let's say Toyota/Some might think it doesn't ADD to 243HP or show up on Dyno. However, it might still kick in and give extra boost to make sure it reaches 243HP in some difficult circumstances where FWD might fall short.