So I am absolutely satisfied with the wall bracket! My LG 42LW579s hung after a few minutes bombs to the wall =) Thanks to the built-in spirit level, I had no longer the problem that shifted the makieren and attach the wall mount. At my first wall mount I had I need three approaches. Would buy again.
Update: Mitlerweile a Philips 7656k hanging on the bracket and here everything depends on how it is intended. Just great =)