you know lower offer % does not equal higher selectivity, right? i believe the general public measure selectivity based on how hard it is to get into a certain company. i don't think it is harder to get into your company than to get into IB/MC. even if it is, you can't prove it with simply hiring statistics like these.
I have no idea what's the purpose of this post. Sounds like the author just got into a great company and feels obligated to brag about it? in which case, grats? /shrug