Only slightly "wrong." Your final panel comparing the .357 180 to the 10mm 180 tells you the LARGER bullet might be a tad more efficient as a fight stopper, kinda like the 1911 .45 aficionados love to say about that .45 caliber being a "man killing fight stopper," because of the initial hole it makes without needing expansion. Your Underwood 180 is a lead bullet out of a 6" barrel w/784 FPE (ft lb of energy). By comparison, my 6" BarSto 10mm Glock barrel gives me 810+ fpe w/180 SGDHP. If you drop down to a 4" barrel you would lose about 200 fps followed by a lower energy number. Additionally, the .357, unlike the 10mm, is not normally loaded with a 180 grain bullet, it normally tops out at 158 grains, and lighter numbers usually show more speed and energy.Wrong.
10mm in full-power is .357 level.
.41 Mag smokes 10mm unless you wimp out and compare the hottest 10mm loads to lightweight .41 loads.
Apples to apples comparison: similar bullet weights & type, by the same manufacturer.
Underwood 10mm 200gr—1200fps
Underwood .41 210gr—1560fps
Underwood .357Mag 180gr—-1400fps
Underwood 10mm 180gr—1400fps
Concentrating on the 4" barrel length, more common with CC pistols, with more common bullet weights, the 10mm still ranks above the .357 and is comparable to the 41 Mag! Additionally, it is as controllable as the .357 and more so than the .41 Mag.