However, when Canon released the 80D and 1Dx mkII, which had much improved DR over previous Canon DSLRs, Canon made very little of it in their literature and promotional material. My guess as to the reason for this is that, firstly it would be acknowledging that DR matters, and previous Canon DSLRs, still in production at the time, were behind the times. Secondly, whilst the DR was much improved it was not class leading and a bit behind the opposition, so again not in Canon's interest to make too much of this. Therefore I don't believe you can read too much into this, because even if the DR was on par or even slightly better than all other APS-C cameras, highlighting it would put other Canon DSLRs, still in production, in less than good light. In other words, overall it's not in Canon's best interest to make too much about DR unless they were replacing the whole of their range with increased DR.