Madden has by far the better kicking game. Perhaps their range is similar, maybe even doueihi can kick it further, but Madden's placement, awareness and kick selection with his kicking is on another level. He is our best kicker. If you want any evidence of that simply look at who Benji gave kicking duties to.
We were an absolute rabble in our sets of 6 yesterday: players missing passes, running sideways, getting stuck in narrow spaces out wide on the last. Madden repeatedly produced important well placed kicks to get us out. Very hard for half backs to do that.
I don't believe it's necessarily forever, but for the good of the team madden has earnt the 7 and deserves to keep it until performance says otherwise. I think it's an important moment for Benji in managing this team, proving to the players that he means what he says and that all players have equal treatment.
Maybe opposition teams manage to disrupt madden and he becomes too predictable and allow teams to suffocate options outside of him, so a more dynamic runner like doueihi becomes vital, but at present madden is the perfect style of player at 7 to the dynamic elite running talent on the edges. You want them getting good early ball and you want someone guiding team around. That's not really doueihi's strength.
I like doueihi a lot, I think he's a terrific halfback option compared to most of the league. However, madden is playing at too high a level to drop him from his halfback spot.