It seemed to me that Phil's mic might be a little farther back from the front edge of the stage than Richie's is. They've also brought Bobby out of the full shadows and put him in a similar spot on Jon's left. They're not getting full lighting during a lot of songs, though, so I guess they're sort of in partial shade.
I'm probably as overly-sensitive as just about anyone on this subject, but even after seeing a show, I can't be mad at Phil. He's doing nothing to act like he's taking over or dissing Richie in any way. He doesn't even move to the same part of the stage that Richie uses when it's time for a solo. He either stays at his mic or moves to the right of the mic and away from center stage. He's very restrained (maybe too restrained) on most of his solos. The only ones I can remember him getting really animated during were LYHOM and KTF, and he can hardly be faulted for that. They're that kind of song.