According to your definition both are type 2 mistakes in my opinion, as both should have been caught by the system or the other crew-member. The EK crew were just lucky they got away with it, the TK guys were not. Having said this, we all make type 2 mistakes once in a while, there is nobody who has never made one. There are of course a lot of contributing factors leading to a type 2 mistake, but it should never result in a serious incident or accident. When this happens the system or the other crew-member has failed. Safe flying to all of you!