Since this thread asking Delta vs UA was started already...
I do not fly for business but usually fly between 35-55k miles per year. I am currently a Delta Gold, but was thinking to switch over to UA because they seem to have more direct and frequent flights from NJ/NYC to the places we travel (Caribbean, TPA, LAS, LAX, TPE). I am too low and don't travel off peak times to really benefit from upgrades.
My wife and I usually do carry-on (~95% of the time).
We use reward miles for upgrades or full ticket depending on if it makes sense.
I have the presidential plus card, for now.

In the case above would it make sense for me to call UA for a FF match and switch airlines or due to my FF level it wont make much of a difference?

Thank you for your time.