A advantage of the console is, that we can't use console commands. In oblivion it totally ruined the game for me, because i was never able not to cheat :$ Too bad I can't spawn a couple thousand of cabbages or 30 dragons though

How is that an advantage? You not being able to not cheat simply indicates a lack of self-control. I'm not meaning to come off as mean, here, but that's not a qualifying advantage for consoles. If anything, having console commands is an advantage for PC users because it allows us more freedom with how we play our game (not to mention allowing us to fix all those stupid broken quests).
And as for why console players are getting less: TES is a primarily PC-based franchise. Skyrim in itself is giving a lot to consoles because the PC version was an Xbox port (had it been the other way around, maybe the menu screens wouldn't be so hard to operate using mouse + keyboard controls). If anything, the PC users are clearly on the short-end of the stick here because we are getting a ported game.
As for the delayed patches and lack of modding capability, blame Micro$oft and $ony. They have to put patches through their own approval process before they get released, and mods are a no-no, because those could potentially break the game and the console (meaning the manufacturers would have to deal with all kinds of crazy complaints) and mods would also provide free content (meaning the manufacturers cannot milk a cut of the profits like they can with expansions and DLC).