WB is Pearl-Chippewa-Elmwood. EB is Church-Ellicott-Goodell. Not only is that how it is signed, that is how it is in the logs.
The original route through Buffalo was Fuhrmann - Michigan - South Park - Main. First reroute came when the Skyway was built. When Main Street was pedestrianized, WB was moved mostly onto one-way (at the time) streets. This is the modern alignment. You could theoretically move EB to more closely match the WB routing now that Pearl Street was converted to two-way, but neither Buffalo nor NY has any interest.
