Google Chrome Developer Advocate Matt Gaunt publicly answers some Web performance-related questions he received. Many of the questions have to do with frameworks, a topic of great interest to me.
A slow website, no matter how it’s built, means someone didn’t notice, didn’t care or couldn’t fix the problem. That doesn’t mean the framework or tools used to build it is the problem, it could be the way those tools have been used.
It could also be that the chosen tool isn’t the best solution to the problem at hand.