Yup I've had a play on several of these kits including the Yamaha DTX range.
It has full mesh snare and tom toms which have rim sensors too, it also has cymbal chokes etc. The benefit of the real skins/mesh over plastic/rubber is that it has less impact on your joints and is quieter.
I have a Pearl Eliminator single bassdrum pedal for the base drum sensor but it will take a double pedal when I'm ready (thinking for metal such as Nightwish's belting operatic tracks).
The TD12 & 20 have the next "brain" up which allows you to tune the virtual parameters at a minute level and the drums/cymbals have three triigger points but these are an additional £800 just for the TD12.. forgetting the TD20!
The TD12 & TD20 use proper high hat stands with hat that has two seperate pieces, larger drums etc that mean a far larger floor foot print.
There are differences but these are in nuances in how to get sounds out of the kit. So I would treat them as different instruments but fundamentally both stem from the same fundamentals in music. If you play a specific timing and rhythm phrases these are the same between the acoustic and v-drum.
One big benifit from this is that I can record every note via MIDI and then use that as a learning tool too to correct my playing. This is easier than tape and metro-gnome

)) in my opinon and I can upload custom kits too so I can make it a complete percussion bay without a snare or tom tom in sight for latin drumming. It can also be used to trigger realtime VST kits or record tracks for MIDI in Reason or other packages.