Bottom line about audio drums... they are EXPENSIVE!
Let's face it, want a MIDI drums style, one guy in his bedroom can do it. If he is talented enough, it's one for the ROM section.
Want an audio drums style? You need a first class studio, first class drums, and a first class musician to play them (then a ton of editing afterwards).
They have to cost ten times as much as a MIDI style to make. Even if you use a MIDI kit, a MIDI guitar, maybe even a MIDI wind controller, there's no need for a full studio. You can still do it from home, and email the parts around to those MIDI musicians in THEIR bedrooms!
This cost issue is why you will NEVER see audio drums styles in the kind of numbers and variety that MIDI styles allow, and you will have to pay a LOT more for them...
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An arranger is just a tool. What matters is what you build with it..!