Normally, the purple patch will scale up any power effects you use on a lower-level target. This includes knockback effects, which will typically turn a knockdown power into knockback if you use it on anything more than one level below you. However, knockdown patch powers seem to be an exception to this. I tested Ice Patch, Earthquake, and Oil Slick Arrow on mobs in Atlas Park while playing a level 50 character, and all of them still only did knockdown, despite being used on enemies over 45 levels below me. I thought maybe the psuedopets these powers use might be using the giant monster code to scale their effects to the level of the enemy mobs, but I lit the Oil Slick Arrow and the enemies died as immediately as you'd expect. So what's the secret sauce here? Anyone know?