ADL5569 single-ended input

I saw “ADL5569 evaluation condition”.

https://ez.analog.com/rf/f/q-a/115442/adl5569-evaluation-condition


My customer wants to evaluate the ADL5596 with a single-ended input.
The note in the figure states that R4 should be 25Ω for a single-ended input.
This seems to me far from the calculated value.
Is there a professional tip where 25Ω is preferred over 22Ω over 33Ω?


Best regards