I think high sensy has advantage over low sensy for Deagles mostly.
Differently of those FPS like CS, you dont need aim pixel per pixel to kill a guy. U can aim under or over, okay that not the best idea as keeping the mouse right on the guy, but all you need to know very well is the bullet arc and firerate.
Developing that idea on my head, i realized that Soldat is much more about movement than aimming. With high sensy u can be a extraornary rusher guy, getting all speed u need from mov tricks and dont loosing focus over the battle. But, your game resume in close range, which is a matter of who nade first or got the best close range dmg.
Thats my way to play, since the curret WM has no more those ranged DMG sprayer from old glory days (1.2.1) ye! i liked those days. Just remember killing lots of guys offscreen @ long maps...
Btw, high sensy Deagles is very effective against low skilled wormer bitches (not as autos, but okay). Even more if you play realistic which the DE recoil is very annoying to keep a high firerate.
The problem with high sensy to me, is that i need to concetrate very well, to estabilize it, but i think in the long run i will get better somehow, ima using that with no winXP acceleration with 1000dpi shit mouse, for 6 months now, but i think i dont got better yet hehe.
But i rly dont recommend that much sensy, since the 1.5.1 you'll be able to change only 1% per 1% sensy ingame. So, you'll be limited to one weapon, if you play that high. Try to find some usefull sensy for all weapons.