It is true that Rotary wing instruction is usually at a higher level of quality than fixed wing instruction pilot and apprentice.
Actually the difference in fixed wing flying and rotary wing flying is quite noticeable due the the nature of the controls and the control inputs required to fly them.
I was quite fortunate to have had an excellent rotary wing instructor when I did my Commercial helicopter License from fixed wing to helicopter, it only took 25 hours of helicopter training to get the license.