No both panels are drawn with an exchange of attacks landed in mind. When he punched Kuzan there are zero signs of a barrier or any space or impact marks indicating a barrier.
If Oda didn't want to draw a barrier he wouldn't have drawn one, atleast not one that obvious. He wanted to draw one, it wasn't by mistake.
Both Kuzan and Roger's heads are thrown back by the punches, the difference is there's a barrier for Roger.