Yes flag holding happens in cw its part of the game but this Guthixs it would be too easy to capture a flag and hold it as they don't need to score per say. When the score is a tie then Guthix's team has no work to do, the score is already in balance so what more needs doing? In this case during a tied game the Guthix team should not be able to take either flags. This doesn't mean they have nothing to do, they can be defending either castle to prevent flag captures.