I didn't watch either of those matches because they were streamed in German, but what I will say is this. Yes knights are good, but it depends hugely on what you do to counter your enemy. If you make Bill ferny and level him to 10, you can creep for huge amounts of gold, and very easily spam out 4 units of wildmen AND wulfar before the enemy has their first knight, depending on the map of course.
Now, instead of splitting those units, you push with them together, keeping tainted land on reserve and killing all of Gondor's farms, and if and when knights show up you throw on defensive mode and land, and then when the knights get stuck switch to offensive mode and kill at least half the battalion. Rinse and repeat. I have done it many times, and combined with fast wulfgar, level 10 bill and wormtongue, it can easily trump knights. Of course, if you are spamming out only wildmen and no heroes, you will lose the fight. Also keep in mind that while you are harassing you can very easily save up 1k to get machinery of war. I know how effective a Gondor Knight start is, I have posted replays of defeating Mordor with it, but I'm also quite certain there are ways to defeat it if you think outside of the box.
1 thing I do find very interesting is that there seem to be different "meta" strategies for German and English players. For example, most English players I know try to get Citadel and Tower guards out as quickly as they can with Gondor, while it seems most German players like to go for fast upgrades and Gondor Soldiers. I think this may have something to do with your belief, because in the 1 game I casted of Skeeverboy he got 2 wildmen huts and spammed out single wildmen, splitting them apart, which is VERY easy to counter with cavalry. This is not how my friends or I would do it, we would get a single Wildmen hut, and get Wulfgar ASAP, followed by a steady stream of Wildmen and Wormtongue asap.