I seem to recall similar discrepancies between a reference handout from Garrett vs. aircraft manufacturer data. Was said at the time to be Allied Signal (then) CYA, and a/c manufacturer made their procedure, usually blending AS recommendations into their procedure/numbers. I'd have to dig REAL deep in the archives to find the booklet.
Our SOP has PNF verifying takeoff power met in the first couple seconds, and that acceleration values are met. Having FADEC and other electronic controls has made me forget about how to "set power", ala LR31/55. :blush: We also require 1000' over takeoff distance to do a rolling, and use 5000' minimum runway for dry ops.