475 ftlbs is 965 fps. That's well into +P territory in a 5" barrel. 230 ball is generally closer to 850 fps, and 370 ftlbs.
I don't have experience with the 45 SUPER, but that seems optimistic based on the Oracle of Google. The only stuff I saw approaching 700 ftlbs was with light bullets. The 255 Buffalo Bore stuff is quoted at 654 ftlbs.
Also, to get the sectional density of a 200 gr 10mm, you need to be upwards of 275 gr in a 45.
I love my 1911, but I don't think 45 caliber in a shorty case can compete with 10 mm in terms of terminal performance. YMMV.