Originally Posted by
Angelicat
The problem is that in normal, you don't get a lot of fights that require a lot of personal responsibility on staying alive or doing a raid wiping mechanic, so it's tough to say for sure.
I guess I should change my answer a bit though now that I think about it. For most average guilds about to finish garrosh/start heroics, I'm sure ranking on fights is a decent factor in getting to join them especially if they don't really check logs in-depth or have a way to tell if a class is playing right, but the real reason I said no in my opinion is because to stay in a guild especially during progression, you typically need to exhibit good qualities that mesh well with the guild (I.E. your personality etc) and also how you fare during progression is important as well. Some people tend to do well on farm fights but not progression fights since they take longer to learn said fight.
Though most guilds typically don't have a choice to be TOO picky and thus will pick you up as long as you fit one of the criteria above and aren't a burden.