They look pretty good! Keep in mind that the photos posted.. Most are using around f8. Much higher than wide open.
Comparing just specs.. The 10-22mm has USM, whole stop wider, more range, metal mount(better build quality?), distance scale, better placement of zoom and focus rings (imo). The 10-18mm has IS, STM (much slower than USM), less range, much slower, plastic mount. Price differences are significant but, think I'll be keeping my 10-22mm for a bit longer.
Really liking the sharp and contrasty pics though!