Thoroughly enjoyed reading the detailed summary.
When travelling alone, the UC seat is ideal compared to BA CW but equally, the UC is not ideal when travelling in ‘twos’.
Your last point on comparing BA F to VS UC is misleading. UC & CW are ‘business products’ & BA F is a much higher price point.
However that comparison is evidence that the UC product beats BA F & CW for sleeping and value for money if a discounted ticket can be purchased.