Not according to benchmarks and my personal experience it's not.

That may have been true five years ago but it's not true today.

To a browser without ublock? Tail wagging the dog if you ask me.

A browser which lacks serious adblocking cannot be a serious option for me, no matter how fast it claims to be.

Too slow will be Chrome infested with ads.

[citation needed]

How on earth is it "too slow"? What are you doing in the web? It loads web pages. What's the difference, fractions of a second? Enjoy no ad-blocking.