How do I view the contents of a file with another file?

I have the file1 with the following content

{"name":"clio5", "value":"13"}
{"name":"citroen_c4", "value":"23"}
{"name":"citroen_c3", "value":"12"}
{"name":"golf4", "value":"16"}
{"name":"golf3", "value":"8"}

And I have the file2 with the following content

{"name":"clio5", "value":"14"}
{"name":"citroen_c4", "value":"25"}
{"name":"golf4", "value":"18"}

I want to execute a shell command in order to display the content of the file1 and the file2. if a name exist in both file1 and file2 so I want to display only the related line of the file2.

So the output should look like this:

$command taking account file1 file2
{"name":"clio5", "value":"14"}
{"name":"citroen_c4", "value":"25"}
{"name":"citroen_c3", "value":"12"}
{"name":"golf4", "value":"18"}
{"name":"golf3", "value":"8"}

The command should not edit file1 neither file2

Edit

The file1 and file2 have exactelly the same content format:

{"name":"any", "value":"xx"}

The command should be as simple as possible

The command could contains grep, sed, awk

---

Here is one way with awk:

awk -F"[:,]" '
NR==FNR { name[$2]=$0;next }
($2 in name) { delete name[$2]; print $0 }
END { for (left in name) print name[left] }' file1 file2

Test:

$ head file*
==> file1 <==
{"name":"clio5", "value":"13"}
{"name":"citroen_c4", "value":"23"}
{"name":"citroen_c3", "value":"12"}
{"name":"golf4", "value":"16"}
{"name":"golf3", "value":"8"}

==> file2 <==
{"name":"clio5", "value":"14"}
{"name":"citroen_c4", "value":"25"}
{"name":"golf4", "value":"18"}

$ awk -F"[:,]" '
NR==FNR { name[$2]=$0;next }
($2 in name) { delete name[$2]; print $0 }
END { for (left in name) print name[left] }' file1 file2
{"name":"clio5", "value":"14"}
{"name":"citroen_c4", "value":"25"}
{"name":"golf4", "value":"18"}
{"name":"golf3", "value":"8"}
{"name":"citroen_c3", "value":"12"}