In large-scale battles with standard units, the Necropolis is the weakest Castle; those who doubt can verify this by playing Tactical Corners, for example:rolleyes:. My statements are substantiated, unlike yours; read the thread about reports, and you will rarely find 500 skeletons on levels 123-124.
However, the example of a duel on Tactical Corners is not very good, as there is a loophole if one of the Castles is the Necropolis. ;)
Regarding 500 skeletons on the second level, it does happen, but more often towards the end of the second or the beginning of the third week, as the standard plan is to have 250 skeletons per week, increasing over time.
In general, it is always difficult to play against the Necropolis, as you cannot defend, but rushing is not always successful... plus, they have immunity to Berserk and an easily accessible resurrection spell. It's not for nothing that they nerfed it. :)