Bob,
I see your point, and it makes sense. But looking at Bell's RFM which directly advise against entering the HV diagram for both take off and landing, and also looking at the R44 HV Diagram (which is what the OP wants!) the only point made by Robinson is a dotted line through their HV diagram marked "recommended take-off profile". JetA1pilot has commented quite well on this.
To interpret that as making the R44 HV diagram not applicable to landings is a long bow, IMHO. Especially for a trainee or low time pilot.
However, the R44 POH
does have a fairly well explained landing procedure, which should make the OP's question a moot point: or cause for even more discussion!
Approach and landing
1 Make final approach into wind at lowest practical rate of descent with initial airspeed of 60 knots
2 Reduce airspeed and altitude smoothly to hover. (Be sure rate of descent is less than 300fpmbefore airspeed is reduced below 30 knots.)
3 From hover, lower collective gradually until ground contact.
4 After initial ground contact, lower collective to full down position