You may be right although I thought it was because of the TV broadcast system frequency used rather than electrical frequency of the power supply. While one is based on the other this hasn't been a limiting factor for some time. And anyway some 60hz power frequency countries use PAL 50hz broadcast frequency.
I always thought (probably wrong) that UK models switched to 60fps for NTSC while obviously still remaining on 50hz supply i.e. they don't use the supply frequency as a display rate clock but this is a hazy area for me.
If you are right, will a US W9 at 240Hz (10x frame rate and 3 x supply frequency) give a better picture for a 24p Blu-ray than a UK W9 at 200hz (8.33 frame rate and 4x supply frequency. Or is it actually 96hz or 192hz? (4x or 8x frame rate but then not locked to supply frequency as you imply).
Avforums review of the 40W905 mentions 96hz for 24p Blu-rays. Can I complain to Trading Standards about false advertising and my missing 104hz or 8hz.
Getting back to the original posters question From avforums review of the 40W905
However both 'Clear' and 'Clear Plus' do use some frame interpolation which can be spotted if you know what to look for. 'True Cinema' increases the frame rate by repeating rather than interpolating, thus reducing judder, so for film content that was our preferred choice.