if you can find and keep an organized cleave team then thats the fastest way. But to just do pug dungeons to 60? That would be slower for most classes than just single questing. Unless you are running a dedicated healing spec (which you dont even need to do until like 50).
Running dungeons is a lot more fun than single questing tho.
âMetasâ are for anyone who really doesnât care to play a game. Itâs about seeing big number. Wanna see big numbers? Get good at pinball or one of the original Mario games. Donât want to use any skill? Play Candy Crush.