Iceman has different parry timing after his second medium than most, if not all, other champions. His second medium pushes the opponent back further than normal, causing a delay in the parry timing. This issue has been reported several times over the years but there’s never been an acknowledgment or response from Kabam. I believe other champions have had the same problem with parrying after second medium, such as pre-buff Antman, so I know it’s possible to fix. Now that Iceman is becoming relevant again, with the AW attack tactic, it would be nice if this issue was addressed.
Here’s an old forum post mentioning this issue:
https://forums.playcontestofchampions.com/en/discussion/180758/parry-after-2nd-medium-not-working-with-certain-champions-with-video-footage