It is not the case.
The comparisons I have run have been between the wide field Leica, Zeiss, Swarovski eyepieces against the EPs from Japan and fromTaiwan.
The one group has been for the focus lengths around f=17mm, and the other for the focus lengths around 10mm.
The winners in resolution and contrast have been the spotting eyepieces from Leica and Zeiss, leaving those from Japan and Taiwan behind. The Swarovski have found their honorary place in the middle.
So, I have parted with some stuff from the Far East manufacturing, keeping the EPs arsenal below fifty.
It's been said a number of times that the best planetary eyepiece is the eyepiece that's in the best planetary telescope. I calculate that you are evaluating these eyepieces at 44x and 75x.
I am not one who evaluates planetary views at 44x or 75x.. even in a 60mm scope.