Snappiness - I don't see it. Perhaps you can expand on this because side by side with my wife's Razr the GN seems faster in the brief comparisons I did.
I'd have to say both the Bionic and Razr were as fast as the GN, in my experiences. In all honesty, I wouldn't be disappointed with either, as pretty much all high end phones I've tested lately have been comparable, save for some isolated conditions. Aspects of ICS are certainly better on the GN, but so far as the hardware goes, the Android portfolio is looking good. I'd be splitting hairs if I said one was clearly faster than the other.
Battery life - I can't compare the GN and Razr cause I'll never have a chance to use the Razr for a whole day. I assume the battery life is decent on the Razr and even better on the Maxx. [...] Razr's battery is not accessible/removable. In a year you may well wish it was.
I'm not sure about the normal Razr, but I think Moto hit it out of the park with the Maxx. Quite simply, I'd trade my GN for a GN "Maxx", with sealed battery, in a heartbeat, as it's rare that I even open the battery door, these days.
I've had my Xoom for over a year+ now and I've had no problems with the sealed battery. Along with some other experiences, not related to cell phones, I'm sold (and would love to not worry about poor battery door design, like my first Droid where it came off easily).
Also I will add "feel". As I mentioned before (maybe a different thread) the Razr feels terrible in my hand. The edges are just uncomfortable to grip. The GN's rounded edges just feel so much better in my hand. I couldn't imagine carrying a Razr around. I assume the Maxx feels similar though I cannot say for sure as I haven't held one.
In my opinion, the Razr was too thin (such a thing does exist). The Maxx felt much better in-hand, to me, and is equivalent in size to the GN; again, Moto gets all the credit for pulling that off. And while I do like the design of the GN much better than the Razr (or anything taking shape with Moto's current design direction), the GN can be a bit slippery at times.
I can easily see why someone would choose the Maxx over the GN, and this will especially be the case once the former receives ICS. That said, you list plenty reasons as to why we also favor the GN. The perfect phone hasn't been created, yet, but the Nexus gets the nod from me, at this point in time.