Yes, there's definitely a difference.
But when I split the data, the "numbers" get even smaller.
Still, we can clearly see there's a serve advantage in singles,
and disadvantage in doubles - that's based on actual outcomes.
But you wonder to what extent the public recognizes and reacts.
I don't worry about this at bet time 'cause I simulate the game
with all my chosen angles, ratings, etc. turned 'ON'.