[toddmorey]

In production marketing sites, I've found over and over that it's usually 3rd party javascript that has the most brutal impact on performance. Or put another way: it's less the particular framework you pick and more how you choose to put it to use. (To help address this, the Builder.io team is doing some amazing and super clever work with a library called Party Town that relocates resource intensive scripts into a web worker to free up the main thread.)

As others are saying, it's silly to compare frameworks unless it's across projects loading and doing basically the same things. So many ancillary decisions impact the performance.

* Not arguing in favor of frameworks here—less javascript is always better! But this comparison method makes no sense to me.