If you rarely use the smallest three cogs with a 50x34 you will use them even LESS often with a 52x36.
Spinning out a 50x11, presumably at 110 rpm, would leave you at 41 mph vs 43 mph with 52x11. If you can do that on flat ground you should have that chain ring manufacturer sponsor you.
If you're doing 40 mph while going downhill you might consider going faster by stopping pedaling and going into an aerodynamic tuck.
The 52t chain ring made more sense when the smallest cog was 14. Now that the smallest cog is 11 the only reason for a 52t chain ring is that they are so damn good looking.
We need cassettes that start at 13 or 14 teeth so we can continue to sport Campy Super Record and Stronglight 93 cranks on our show steeds.