- security is better
Sorry to say that, but : no. It’s very weaker than plain old Debian package.
Currently, your snap embeds : libevent openssl pthreads libasan2 libubsan python 2.7 python-torctl tor-arm tor
Any security change on one of those embeded libraries require *you* rebuild and upload a new snap to fix the problem. This is very problematic for at least openssl (very frequent security fix) and tor/torctl/tor-arm (now, *you* need to follow every official releases of those 3 parts and deliver a new snap each time).
On a plain old Debian package, a security change impacts only *one* package (not *all* apps) and require only *the maintainer* of the lib package (not *all* apps ones) to rebuild and deploy. And this fixes *every* other package using this lib without extra step.
Snap, docker and more generally all packaging system embeding libs inside are just a nightmare in terms of security update.
<3