Vivid Display provides a wide color gamut unique to AMOLED with lively colors, deep primary colors (Red, Green, Blue). For this reason, it would use more battery power.
I agree with @SamsungRei. Vivid is essentially P3, whereas Natural looks to be the sRGB color space. Where consumption is concerned, I feel the deficit isn't a major one. If you watch a lot of media it makes sense to stick with vivid, especially for HDR based content.
I've monitored my battery life closely, only under vivid, and feel it's worth using on the N10 and S10.
So I just realized that the N10 has a slightly larger display than the regular S10, which can account for runtime variations. On your N10 can you confirm that the multiple S Pen feature is disabled?