Return from Moon Surface to Earth ∆V: 2.44+0.68+0.14+0.68+1.73 = 5.7 km/s
Earth to Mars Surface ∆V: 9.4+2.44+0.68+0.09+0.39+0.67+.034+0.40+0.70+3.8 = 18.6 km/s
Return from Mars Surface to Earth ∆V: 2.44+0.68+0.09+0.39+0.67+.034+0.40+0.70+3.8 = 9.2 km/s
Yes, it's more, but it's really not _that_ big of an engineering stretch.
Return from Moon Surface to Earth ∆V: 2.44+0.68+0.14+0.68+1.73 = 5.7 km/s
Earth to Mars Surface ∆V: 9.4+2.44+0.68+0.09+0.39+0.67+.034+0.40+0.70+3.8 = 18.6 km/s
Return from Mars Surface to Earth ∆V: 2.44+0.68+0.09+0.39+0.67+.034+0.40+0.70+3.8 = 9.2 km/s
Yes, it's more, but it's really not _that_ big of an engineering stretch.