Three ways we're better:
1) Magnetic palettes are not secure. Drop it once and everything breaks or crumbles.
2) Magnetic palettes require de-potting. De-potting is a DIY process that requires heat, a razor blade, and time to remove a glued cosmetic pan from its plastic casing. Not to mention, if you mess up, you can easy crumble and ruin the makeup.
3) Magnetic palettes that don't require de-potting usually only offer products from a single brand.