The Pfizer vaccine is also not going to be reviewed in a hurry IMO. As per article I read some time ago, the mRna is very unstable and it is therefore protected in a lipid layer. That in turn however used to cause huge inflammation response. That is where BioNTech come in as they were able to overcome this with new technology.Great news for Africa and poorer countries.
I'm also happy to get this vaccine when it's my turn.
The Phizer vaccine just feels like there are long term side effects that are still unknown.
Unfortunately what goes into this "lipid layer" is a proprietary information so not likely to be disclosed.