Here a panel from Blue Devil #19
Here the panel from Teen Titans Vol 3 #47.
"Making more Sense" was just meant in that way, that apart from having kind of a friendship (even if only shown in on issue) Kid Devil is a character that is (pre flashpoint) much closer to Jasons age and is not a close friend of Dick or Tim or a iconic member of the Titans or Young Justice.
And while Roy and Jason were together on the Titans, they weren't really more close that Jason was with the rest of the team (Jason had iirc the more interaction with Donna than with Roy).