The Simon says style definitely gets old fast. Servers that use that style like Crown's and my Falling Tiles tend to attract a wide audience of players. Most of them tend to not stay on the server for long periods of time because its very repetitive. Hence why we host only a few times a week and tend to shut down when playercounts dip below 20 players.
As for Tezuni's, his escape style of gameplay can retain decent and consistent playercounts due to the several scenarios that can play out each round.
The server's really can't be compared at all besides the builds which are both fair.