Because it takes extra modifications to make this crib work, it may be less safe and may leave a gap between the bed and the crib. (abckidsinc.com)
It brings other extra modifications such as the SuperSU, BusyBox, init.d patch support, it is fully deodexed, it included the latest Gapps for Jelly Bean, stock Google lock and multiple others. (android.gs)
That's why the trucks down here have some extra modifications. (automobilemag.com)