ΔE 15.1, loose: different enough that you should pick on purpose. Titan Mars Pale is a little lighter, more muted, warmer than Senshi Skin.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 15). Titan Mars Pale is a little lighter, more muted, warmer than Senshi Skin.
The same difference applies the other way round: Senshi Skin is a little darker, more saturated, cooler.
ΔE is the colour difference between our two swatch estimates: under about 6 is close, over about 15 is loose. Real paints also differ in finish, coverage and how they thin, so test before you commit.
See Senshi Skin on the colour wheel See Titan Mars Pale on the colour wheel
All matches: Senshi Skin equivalents · Titan Mars Pale equivalents