Individually, probably not, no. Iginla's prime is under appreciated, partially because of who he played with (or rather lack there of) but also who he played for (Sutters). Then, there's the fact he lost an entire prime year to a lockout.
Both Gaudreau and Monahan benefit not only from getting to play with each other, but also from having a guy like Bennett behind them, who diverts opponents attention giving them more space or easier competition. Then, there's the fact they play under Hartley's up tempo offensive system as opposed to either Sutter's chloroform like approach.
But I could see Gaudreau getting more points, if he stays healthy enough and remains a Flame for most if not all of his career. Good chance he'll get some help via the reduction in size of goalie equipment.