In the real world (as opposed to the test lab) under certain scenarios the OnGuard might defeat a thief where an Abus might not. Yes, the Abus has a better lock cylinder and harder to cut steel, but the heavier, less expensive OnGuard has
more steel. It could possible to cut a single leg of the Abus and bend the U enough to get the bike loose, where the thief has to cut both legs of the stiffer OnGuard (see post 10).
Use good locking technique!