Is the Canon TS-E 45mm f/2.8 Tilt Shift Lens sharp? This page visually answers that question. Shown above are 100% crops from a lab-captured 63mm f/4.5 test image. Observe the contrast and resolution of these results.
Is the Canon TS-E 45mm f/2.8 Tilt Shift Lens set to 63mm f/4.5 sharper than the Canon EF 24-70mm f/2.8L USM Lens set to 50mm f/8.0? The image quality comparison above also answers that question. Switch between the results to see the sharpness differences between these lenses.