Honestly, that is really bad logic and I'm glad people like you don't get to influence tiering decisions.
We saw two instances in which Pokemon had to sacrifice themselves to beat Salamence, both of which are easily prevented with a switch. Explosion killing Salamence doesn't make it balanced. Using a nearly-dead Pokemon's Intimidate to nullify a DD's attack boost doesn't mean Salamence isn't destroying teams on a regular basis. This battle does not gage Salamence's tiering position in any way, and it definitely doesn't refute the years of experience players have accrued to determine that it was indeed overpowering the standard metagame.