The context is different, Nanoha and Fate aren't obsolete, just inexperienced. Also, even with the cartridge System neither of them manage to successfully defeat any of the Wolkenritters(quite the contrary Fate needs to even get a second upgrade just to keep up with Signum), that's why i mention the Wolks are impressive for a time, Modern Mid-mages aren't that accustomed to deal with unholy powerfull close combat magical knights. And even after a time and the developing of the modern Belka system the Wolkenritter remain an effective combat force thus proving their experience and strenght. But then Eclipse came into play and change the setting completely rendering any of the Wolks main abilities near useless.
Signum even lampshades this in StrikerS as she comments that she's indeed and old fashioned knight who knows few things besides using a sword. Now that swords are useless and her myghty defensive powers are non-existent to the new weapons she's completely outclassed. Sure she still can deal with non anti-magic foes but as things are developing it's lampshaded that this tendency to screw with mages will only increase from this point onwards, also plotwise she isn't as important as the aces and even Vita overshadows her in protagonism, thus making hopes for an epic comeback quite scarce, hope that this didn't end like her first unison with Agito, i want to see Signum taking down an actual hard opponent, not a bunch of mooks.