Will Mixing & Gear Fix Broken Music? - No

I take the challenge laid down by AP Mastering in his video (link below) where he points out that fancy Gear & Mixing Tipz n Trix can never solve poor music. The tracks I am using here are the ones he shared so others could test his theory (truism). Oh, I do promise that I show what I did, but that ended up on the cutting room floor as apparently, that is too boring for words.

AP Mastering Video:    • Gear Won't Save You: Shocking Truth A...  
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Chapters:
00:00:00 Intro
00:01:24 Quick A-B
00:03:37 My Process
00:07:25 The Test - Piece A
00:10:40 The Problem
00:13:35 The Test - Piece B
00:14:56 Record Producer's Advice
00:19:59 Conclusion