I see J&J is reporting 85% on it's one-shot vaccine, too.
IIRC, J&J's storage requirements are basically
Third-World-Friendly. So with AstraZeneca, Novavx, and J&J all
Third-World-Friendly Melinda-Gates-Grade guilt-trippers should STFU. Should, but too ignorant to know they are wrong.
J&J also has a Phase III two-dose test underway, to see whether a second dose improves efficacy. I wonder whether Pfizer and/or Moderna have considered doing the reverse, a single-dose test to see if efficacy would be reduced.