User blog comment:Xilinoc/Ch. 562 - THE VILLAIN 2 (Mask De Masculine is a Mexican luchador in a German army)/@comment-24297669-20131217215754/@comment-117598-20131218220134

One thing I just realized. We never saw the results of Renji's training during the 17 months. Just the one quick fight between Jackie and that was it. During this arc, he got KO'ed quickly during the first invasion. Odd that he would make such a statement about training to defeat Aizen and then not actually show much of anything during the first invasion. Like it was just glanced over and Kubo thought he should be pumped up even more. Sure it was cool visually how he defeated Jackie but nothing that could accurately show how much stronger he got.