Lol, people are still going on about this.
How about I say this, CS is not necessarily above Wendy + Erza(Even though I doubt that)
Lets say WenZa > CS that August fought, take into consideration August was dusting CS into the ground, to the point that they could barely move, while Irene is currently struggling with WenZa. While in this situation WenZa > CS , someone no diffed the weaker while the other is struggling with the stronger, when the gap is logically not even that big. If you use logic, the weaker one who got no diffed, the stronger one who isn't THAT stronger gets the same treatment, maybe even slightly better. A low diff.
And take how much battle experience and skill Irene has compared to August, I see August as superior in battle skill so far.
And it seems Irene doesn't know how to take a number of opponents, in 1v1, she would humiliate Wendy or Erza, but in a 2v1 she got overwhelmed. She certainly has hard time with a number of opponents, just like CS.
And some people are saying August = Irene was stated ? It was never even mentioned. Brandish said that she is the strongest of FEMALES, and we have 3 in the S12, and those are Brandish,Dimaria and Irene.
Dimaria without Ages Seal is a scrub, she got one shot by Partial END.
Brandish got NLF'ed by Enchanted Neinhart, who in turn got one shot (or two shot if some Natsu fanboy tries to defend it) by Base Natsu.
Being stronger than those 2 is not Abnormal.
This has gone way off topic, but CS wins this Extreme diff due to numbers.