Text looks nicer on a Mac than on a Windows PC due to deliberate font rendering choices made by each operating system.
macOS prioritizes aesthetic fidelity, rendering fonts true to their design for a smoother appearance, while Windows prioritizes on-screen readability and sharpness.
Apple preserves the shape and weight of the typeface, whereas Microsoft 'hammers' outlines to the pixel grid for crispness, resulting in differences in text thickness and crispness.
These differences in font rendering philosophy explain why text on a Mac may look thicker or smoother, while text on Windows may appear thinner but crisper.