I accept that you don't see it (as you say, in your opinion), but won't accept that it is not there, unless you can explain how the 50 images are output as 60 images over the same period of time otherwise
You don't really need to bother though, since you are happy with it and I don't use one anyway. Also, as you say, Youtube and camcorders and the like are not useful for demonstrating such things; would need at least a good VGA capture card that does not drop any frames. I'm just interested in standards conversion issues due to dabbling in other video technology.
If you show a fraction of a field, it means that the field changes in the middle of the screen (ie. "tearing"). This is generally much more undesirable than slight stuttering.