At first glance, some of the neutral shades look similar to those from the Naked Palette.
First up is Midnight Rodeo vs. Sidecar. These two look nearly identical in the pan and both have obvious large glitter bits.
Next is Deeper vs. Smog. Deeper looks much lighter in the pan compared to Smog so it is not an exact dupe. Deeper is also not as bronze compared to Half Baked.
Side-by-side swatches show Deeper as a dark brown compared to Smog's bronze medium brown. Sidecar is more taupe compared to Midnight Rodeo. Although Deeper and Midnight Rodeo are in the same family as Smog and Sidecar, they are not quite the same.
In the pan, Ace is very similar to Gunmetal but without the large glitter bits. Blackout is a matte finish and does not have shimmer compared to Creep. M.I.A and Hustle are both burgundy browns but Hustle is a tad darker in the pan.
Chase is also similar to Half Baked in the pan although it is not as bronze.
In the swatch, Blackout is a darker and deeper matte black compared to a frosty and glittery Creep. Both are chalky but Creep can't really get to an opaque black like Blackout. Gunmetal is lighter compared to Ace, which leans a tad more blue. Gunmetal also has larger bits of glitter whereas Ace is much smoother. Half Baked is more orange/bronze compared to Chase.
Midnight 15 is not similar to any of the shades in the Naked Palette. Flow looks like it may be similar to Sin although it is peachier in the pan.
Flow is in fact lighter and peachier compared to Sin although the flash in the picture doesn't show it as well. Midnight 15 does not have the peach or pink hue like Sin or Flow. Hustle is very close to MIA but it is slightly darker. Hustle also has less shimmer compared to MIA.
I know MAC's Romping is not in the Naked Palette but I couldn't but think of it when I saw Junkshow. The shades look quite similar in the pan although Romping is more pink.
In the swatch, Junkshow is not as pink and is frostier compared to Romping. Junkshow is also more unique with the fuchsia-blue base, making it look more like a duo-chrome.
Based on the swatches and comparison, a few of the shades from the 15th Anniversary Palette do look similar to those from the Naked Palette. However, I would not say they are exact dupes. Hustle and MIA are the only two that are nearly identical at first glance.
If you already own the Naked Palette, only want neutral shades, and is on a budget, you can probably skip the 15th anniversary palette. However, do keep in mind that there is nothing similar to Vanilla and Midnight 15 in the Naked Palette. At the same time, there are also other satin shades in the Naked Palette that is not included in the 15th Anniversary. As a lover of neutral shades, I welcome both palettes. However, if I were to choose only one, I would go with the 15th Anniversary palette because it has a good mixture of both neutral and bold shades.
Which would you choose? The Naked Palette or the 15th Anniversary Palette?