Scared to tank lvl 50 dungeons

[Delorean]

Highly disagree. Nothing will prepare you for the gear discrepancy that hits a fresh 50.

Well if you don't have a good idea of how to play a tank you will be able to pick up the fundamentals of your role and practice the basics in a potentially less stressful environment.

I mean, just because someone leveled a tank class it doesn't mean they are familiar with a good strategy for playing said class or the workings of instanced dungeon raids.

There is definitely a gap that is larger than those previously encountered, but these issues will be easier to manage with a good idea of what you need to do as opposed to being confused and overwhelmed, trying to figure out what it is that you need to do.