Which ESP is Best for Deliverability? (Spoiler: Wrong Question)

Just the other day, I saw someone post another one of those "Deliverability Ranked by ESP" charts, and frankly, it drives me nuts. These charts are inaccurate and misleading. There is no useful way to generate a single "snapshot metric" that tells you you'll get better inbox placement on Platform A versus Platform B. Why? Because that's simply not how deliverability works. So, how do you actually…