TEB exhibited the same pros and cons of most top OW guilds that came in TLPs past. Approximately as clean, motivated, probably more organized than any that I've been in. All of these guilds had a tail of bads, they need to. All the non-ow guilds cry about the zerg recruiting. All had cliques.
No matter how bad an engage or how many people were AFK, I don't think it was ever even possible to wipe prior to PoP. So I don't really get the talk about carrying the guild and parses and everything. A quarter or more of those 72 man raids were probably fully afk. Only real differentiator between TEBs times and other guilds times are probably 1 part planning (which always seemed quite good) and 1 part having enough people that could stay awake for 35 hours straight. There's definitely a huge disparity in skill between the top and bottom, but lets not pretend that skilled players or lackthereof is a driving force behind the guild's success in any material way up until now.