Wrong. This is an RvR game--Realm versus Realm. Let's review the homepage:
Actually you're also wrong though.
This is a team oriented game but no where is it defined that this team means the "realm."
In fact, under the most current estate rules of the game, I would interpret team to mean "your liege and your vassals" as your team. This means that knights should obviously be on the team of their lord and whatever team their lord decides to place them on. All lords should be on the team of their duke, and whatever team their duke decides to place them on. All dukes should be on the team of their ruler, which effectively ties them to the realm. However, this system allows political intrigue to occur. No where does it say that each duke is on the team of the other dukes in the realm. The dukes can all compete against each other to be ruler, and thus enlarge their team while also not wanting to harm their realm as that is the team they'll inherit.
The same applies to knights. Each knight should primarily seek to impress their lord as they'd be competing against their fellow knights for the lord's support for a lordship of their own. This leads them to obviously want to support their lord but not necessarily anyone else in their realm.
The application applied to lords is the most interesting in that the lords bring all their knights to the team of their duke and while they want to show loyalty to their duke in order to curry favor, they should compete against the other lords for the chance at Dukedoms or higher lordships. But, they can also change dukes and thus change teams if they feel it improves their chances of "winning" in either gaining power or positioning themselves or their knights to greater influence. However, they risk creating a bad view of themselves if they abandon oaths easily.
The ruler is the only one whose team is their realm. They should thus seek to maintain their team by enlarging the realm and growing the power and strength of their team overall as it builds their own strength and maintains the good will of their people.
