No. This isn't a case of OJ finding the Real Killers(tm). It wasn't even "new" evidence.
>Ramirez appealed to federal court where his federal public defenders uncovered evidence of intellectual disability and extensive childhood abuse that hadn't been presented at his initial trial.
The ruling only overturned (the 9th circuit precedent) whether the 'default' position of the appeals court should be to accept/consider new arguments not made at trial.
It was not suddenly discovered that the convicted might be intellectually disabled.
Which is itself is still quite the leap from suddenly discovering 'exonerating evidence'.
>"Jones also appealed to federal court, where federal investigators found evidence suggesting he was innocent. In both cases, ..."
Just about every single person on death row will suddenly claim to have found yet another round of evidence proving innocence when their previous appeal doesn’t work out. It’s a classic delaying tactic, and in this case I agree with the Supreme Court.
They apparently didn't like their chances at retrial, even with "effective counsel".
"We couldn't simultaneously argue two conflicting theories of defense"...
Isn't quite the same argument when your revealed preference shows you not to believe either theory to stand on its own (or together).
"Your honor, we'd like this conviction thrown out because we couldve/shouldve claimed 'defense option B'." Retrial granted. "No! We don't actually want to retry with 'defense option B'! We just needed a reason to throw out conviction based on 'defense option A'!"
An appeals judge should be able to make that call the same way a trial judge can dismiss charges before trial. That appeals judge can easily say, it’s relevant but not clear enough for me to dismiss the case.
PS: Thus various standards of evidence “beyond reasonable doubt” vs “clear and convincing” vs “preponderance” etc.