As has been said above - Kemper's approach differs quite a bit from modelers.
For distortion/fuzz, there is essentially no point to adding a bunch of preset 'pedals'. The paramters for Drive and Fuzz allow you to emulate (quite convincingly) a HUGE number of pedals. I've been able to mimic my own King of Tone so well that in an A/B test...I get it right as much as I get it wrong.
Stack two pedals and emulate THAT into one slot. It works pretty darn good!
This applies for mod, delay and reverb as well. The parameters allow you to emulate (and downright nail) a huge number of effects.
Its not better or worse - but it is a different way of addressing the need. One I personally think promotes creativity and finding the sound that's 'in your head', as opposed to saying "Well...if that's what a Klon sounds like......OK...but...meh."