Featwise I agree but I also feel like Doffy got cucked by plot and it will look stronger later
Ifrit Jambe is combined with extreme speed and strenght therefore as sanji said himself " a different weight" E= mc²
UNIQUE CoA (white lightning effects that suprisingly looks like the Adv CoC effect )
Asura is a point blank attack, so not some much "weight" due to speed but more so thanks to extreme raw strenght and Adv CoC
Therefore, can the extreme speed of ifrit jambe create as much weight as the extreme raw strenght of asura.. remember E= mc², speed is squared