The only point I would prefer is the character editor. CO has more options and I saw incredible good concepts in the last 15 years.
On the other hand CO´s community became toxic at the time when it went free to play. I don´t think they would do the same for CO as we did for CoH.
The differences in gameplay didn´t make CO better, the graphics are more comic-stylish. I like CoH´s graphics better because they were meant to be realistic.
It became a hardcore grinder over the past years due to the lack of new content. Yes it was the only alternative with an RP-scene but they never had official or unofficial RP-servers.
Loved CO for many years but it feels now they (Cryptic, arc games, embracer group, who ever) should let it die in dignity finally.