1. A tutorial is not a controlled document, latest one is Dec 2019.
After initial (common) actions:
SPEED Pull & Set GD
if appropriate:
HDG Pull & set
.....
ALT set & pull
In fact the order of actions in the tutorial is different from the FCTM, FCTM is king.
2. The FCTM mentions:
When ready for descent, the PF:
-sets the SPEED and pulls
-sets the engine out recovery altitude and pulls to engage for OPEN DES
I say again:
If you PULL altitude before approaching green dot (spd trend is a good guide) the aircraft may descend earlier than AT green dot. I.e.: level flight is not guaranteed due energy exchange ratio between speed and altitude.
For the SAME reason we don’t PULL ALT in the EFATO profile, before green dot is reached. (Trend touching index, sic!)
cheers