When I did avalanche safety training, we were told your chance of surviving an avalanche with (shovel/probe/beacon) is about 50% overall. Roughly 25% of people are killed in the avalanche (before it stops). If you survive the initial avalanche, if you're buried your buddies have about 10 minutes to dig you out. After that, survival rates drop rapidly.
Assuming you have people around that can locate you/dig you out (beacon/shovel/etc. you mentioned), and you manage to have some breathing space (that could allow you to survive for a few hours in the best case). If not, then probably those stats with lightning strike might be comparable, i.e. you rarely survive. There are plenty of "lone wolf" tourists/off-slope skiers. I used to ignore these when I was a reckless teen, now I try to be super careful.
