Just a guess, maybe the high plateau of torque at medium rpm has been capped in the manual version to protect the gearbox, and the maximum power is the same for automatic and manual at the higher rpm range. There the torque is lower and also the same for both versions but there is no more danger for the manual gearbox.
In addition perhaps with the manual box the same HP is realized at slightly higher revs with a little less torque.
Last edited by Heinz; 28/04/20 03:10 PM.