Why does sklearn.Pipeline with regex outperform spacy for text preprocessing?

# TL;DR

I need help selecting between `spacy` and `sklearn` for processing a huge text corpus. I ran a test to measure the performance of each, but the results were unexpected. Moreover, because I'm new-ish to the frameworks involved, I lack confidence that my test is completely valid. I'd really appreciate some guidance.

- [Code](https://pastebin.com/dBAW1rrD)

- [Results](https://imgur.com/a/dhJmNGi)

# Background

I'm doing a project that involves preprocessing 35 million Reddit comments. This is a massive amount of text. So I'm searching …

languagetechnology pipeline regex sklearn spacy text