What I like the most in 100L is resolution.
The 100L's center resolution is very good, but there are some lenses that outresolve the 100L, and many lenses that outresolve the 100L at the edges. At f/5.6-f/8, even the cheap nifty-fifty (50mm f/1.8 II) outresolves the 100L across the whole frame.
But if you mean resolution in actual spatial terms, i.e. the ability to resolve spatial details of real world objects, then yes, the 100L is great for that. Then again, if you like the detail in shots at 1:1 magnification, try going up to 5:1 magnification with the MP-E 65mm f/2.8 1-5x Macro (example images here).