Answer 1

Comparisons like this are always subjective.
There is no clear concept of "powerful", only suitability for a specific programming task.
Every developer will favour the language that they know best, but any other language might have the same sort of features, and maybe different kinds of flaws. PHP and Node.js are both powerful and popular.

Why don't you try both and decide for yourself?

https://kinsta.com/blog/node-js-vs-php/

Answer 2

Node.js is much much more powerful and has a very large number of libraries