Warp speed supported several parallel efforts and also production, which seems like a very complicated process involving multiple companies both in US and Europe, some of which developing totally new production lines in a matter of months.
I also suggest people here take a short break and review some European press, most of which is as anti-Trump as any. I came up with 12/18 (well 18.12) article in Der Spiegel that depicts how pitiful European process is comparing with UK and US.
US pre-ordered mRNAs in July, EU in November; US/UK ordered a lot from each of the companies, EU mostly from the most favorite ones that have problems (AstroZenics, Sanofi,CureVac). As a result, EU expects to vaccine 2/3 of population in September, 4 months behind US.
So, we are really at a comparatively good spot here. I presume there would always be a delta between EU and US, but it is amazing that this happened consistently in multiple government purchasing decisions, most of them in Warp speed territory, some in FDA (approvals).