I liked Winter Soldier quite a bit more.
What I liked about Civil War:
The new Spider Man- very fun, great retro Spider Man
Ant Man was great comic relief
I liked the basic struggle between the two groups- though I thought it was overplayed more than it was in Winter Soldier. The point was not about 'The United Nations'- it could have just as easily have been the United States insisting on the control and registration of the "Enhanced Individuals".
And at its base the movie showed two viewpoints of allowing individuals to decide what is best- Captain American and his band ignore the governments demands and pursue the bad guy- for the best of reasons.
But the bad guy- is acting according to what he thinks is best for humanity- and in the end he is the one who permanently eliminated super individuals who might have been able to beat Captain America or the Winter Soldier. But the bad guy intentionally kills innocent people along the way, and tortures to get his information.
On the bad side- I thought the movie was too busy. Probably unavoidable with all of the characters involved. I thought Avengers 1 did a fine job of portraying each character well, and Avengers 2 did a good job- this movie much less so.
I can't wait to see it; but I will! I usually never go to the theater and either buy the DVD or wait until it hits cable! I hate these new multi-cineplexes; blasting sound enough to bust an eardrum! People talk louder to be heard and they still allow these losers to use their cells inside! I haven't been to one since taking my nieces and nephew to see "Poppins' Penguins!" That's been many years! I've only been 5 or 6 times in 30 years when I used to really enjoy going all the time in the 70's! I can still remember the movies I did check out; "Clue, J Carpenter's, Prince of Darkness, Hell's Gate, and someone took me to see Interview W/ A Vampire!" I can wait patiently to see in my own good time even if it's something great! ;-/