what are the most dangerous moves that are easiest to botch in wrestling + bq?

Piledriver, definitely. The Go To/2 Sleep is also one I've seen botched and delivered painfully. Powerbomb's another one that's had it's fair share of casualties. Rumor is Khali killed a guy with it in training before he came to the WWE, and Raven's infamous "Vilano Breaker" incident is pretty well known, along with the Pillman KO from way back in WarGames...also, there was that time Bob Holly nearly caused Lesnar to kill him with one.

Moonsaults and Double Foot Stomps would make my list as well. Even Backdrops are gaining a reputation as dangerous.

I don't think the Atomic Drop's dangerous simply because it's usually pretty choreographed and slow. Backbreakers, depending on how they're done (Strong's latest Falcon Arrow, for example need not apply) tend to go off without a hitch and are more about stomping the mat and making a big noise and gingerly landing your opponent across your knee.

BA: No. I like Ryback, I'm probably one of the few people you'll ever hear say that these days, but even I admit the dude's greener than goose poop. A wrestler the caliber of Lesnar would wrestle circles around him. Which, actually wouldn't be a bad thing. A guy like Ryback needs someone to carry him.

Any aerial move is risky. Frog splash, Justin Gabriel's 450 splash.

Some moves look like they'd do as much damage to the one doing the move. Big E Langston, RKO.

Ryback is not ready to carry the company on his back. He can't get out more than 3 sentences before starting to chant "Feed Me More." He stopped reminding me of Goldberg recently and started to remind me of the Ultimate Warrior, minus the insane promos that no one understands.

No main event for Ryback. He needs more then 3 power moves

Powerbombs and Deathdrops

I don't think Ryback will ever make it to the top. He will stay in the upper mid card and descend from there.

Gringo Killer (Homicide) Canadian Destroyer (Petey Williams) Rolling Chaos (Doug Williams)

dives to the outside......if nobody catches the guy BAM broken neck.

Canadian Destroyer

dives