The advance sign with "north" on it should be at or after the gore point, if it isn't that will get fixed in audit. I understand how it might be confusing, but it exists elsewhere. 3 km away, Eastbound Stoney SE at Deerfoot makes no advanced mention of "City Centre" until the second set of signs - the exact same formula. In this particular instance at Macleod/22X, they've chosen to include "City Centre" on the first gantry as most traffic exiting will be going north, but correctly followed the formula by not including "north" on it. Ultimately what determines the first gantry signs is the lane configuration after the gore point, and to that end they have done it correctly.
Of note is that the signage was all done by AB Trans and the general incompetence of detours and temporary signage by the road builders KGL is unrelated.
Red arrows pointing at the technically correct but potentially confusing sign: