On the engine failure tests, you have to overcompensate for the glide-thru. For instance, on the MD-80 Exam G, if you approach at or near stall speed, you will crash before you get to the runway. I had to bring it in at twice the recommended altitude, ~180 knots, then drop gear and air-brake as fast as possible once I was over the runway threshold.
I suppose the real lesson here is, once you're down to one engine, you need to overcompensate for it in case you lose the second engine.