Is the Canon EF-M 22mm f/2 STM Lens sharp? This page visually answers that question. Shown above are 100% crops from a lab-captured 22mm f/2.8 test image. Observe the contrast and resolution of these results.
Is the Canon EF-M 22mm f/2 STM Lens set to 22mm f/2.8 sharper than the Canon TS-E 24mm f/3.5L II Tilt-Shift Lens set to 24mm f/3.5? The image quality comparison above also answers that question. Switch between the results to see the sharpness differences between these lenses.