I've posted this article before. I don't have time to re-read all of it right now, and I don't trust my memory to give an accurate summary, but I recall his methodology and analysis are at least interesting. Much more goes into evaluating arm talent than the ability to throw deep and he covers those variables for the QBs at the top of the 2020 class. A free account is now required to read it but I'll post his tl;dr.
TL;DR
Of the four quarterback prospects, Jordan Love has the strongest arm. With a maximum launch velocity that’s nearly equivalent to a 98 mile per hour fastball, he’s able to make some throws the other QBs cannot. While Tua Tagovailoa’s arm is a concern, he makes up for it with the quickest throwing motion I’ve ever analyzed — yes, it’s faster than Dan Marino’s. Joe Burrow, on the other hand, was in the middle of the pack for both arm strength and release time, but he’s the quickest decision maker. In fact, he took less time, on average, to pull the trigger on throws than any other quarterback I’ve tracked. Justin Herbert was generally around average for each metric. I see Joe Burrow having Joe Montana-like talent (not necessarily the same career), Tua is a combination of Drew Brees’s 40-year-old arm and Mike Vick’s 37-year-old legs, Love reminds me of a mini Josh Allen, and Herbert has a striking resemblance to Derek Anderson. And if the NFL Combine wants to hit me up for ideas on how to improve their process, my DMs are wide open.
Tim Dix is a writer based in Los Angeles, where he mostly produces television about sports or science or both. He can be contacted at timdixtv@gmail.com.