I'm not sure I see what makes Joseph Smith a bigger con man than CTR/Russel. Sure he claimed to have received a revelation but I don't see how that's much different than claiming to be the FDS and spirit-directed, at least in practice.
I do think it's a little easier to fade from mormonism from what little I've read about it, and they're not discouraged from seeking education so ex-mormons are probably in a slightly better situation because of that. Both of those could probably lead to less bitterness. Mormonism seems a hair healthier to me due to the strong emphasis on family.
I'm certainly no expert, though.