Does MagSafe charge the MacBook Air faster than USB-C?

No, MagSafe and USB-C charge the MacBook Air at the same speed because both ports support the same maximum wattage (67W or 70W on M2 and newer, 35W on M1). The only difference is convenience: MagSafe snaps on magnetically and won’t yank your laptop off the table, while USB-C is universal but easier to disconnect accidentally. Pick based on which cable you hate losing more.