[bluGill]

All of those vaccines were created within weeks of the genetic sequence being released. The release dates you are referring to is only about regulatory oversight. Countries like the US and EU (and a long list of others) where Pfizer and Moderna targeted their sales are very careful to not allow the release of anything until they have evidence it works and is safe. For Sputnik V they released it before being sure it worked - which allowed them to release much faster, but there is a reason the rest of the world cried foul - even countries with few regulations didn't allow it to be used until more study was done - study that takes time.