Rippers can employ different strategies.
The simplest one is reading the data as is.
If a CRC occurs, they simple accept the interpolation offered by the drive.
Another option is not to accept this but re-read the sector a couple of times and try to establish the best possible representation of the data.
Rippers like dBpoweramp calculated the MD5 and compare this checksum with the Accuraterip database.
If your results are in agreement with those of others, it is likely the rip is perfect.
gvanbrunt
To the best of my knowledge, there is no relation between the audio format and the results.
A ripper simple reads data in Redbook format (audio CD).
As far as I know, you can’t read it in a different way.
The output is raw PCM.
This it is converted to the file format format of choice by the user.
Small errors are in general not audible, the interpolation of the drive compensates for it.