You should prefer the bigger ones haha. The big planes have two engines and complete redundancy, two pilots who have more experience, turbine engines which are more reliable, better glide ratio so they can glide further, higher cruise levels so they can glide even further. I fly that plane in the video for work and I cross my fingers when we go over dense trees or water because those 1980's planes are always giving us trouble!
If 20 more were injured then the seatbelt sign probably wasn't on, which means they probably hit clear air turbulence in cruise. Usually the planes ahead will report anything like that so the ones behind it will know what's coming, but this must've been a big bit of windshear one out of nowhere.