Mesa Rectifier: ultimate 3 channel vs 2 channel comparison (high gain)

So there’s a ton of talk about the differences between the 2ch and the 3ch Rectifiers and their different revisions... but are those heads REALLY as different as the forum hype wants you to believe? Here’s a back to back comparison of my RevF 2 channel and my 3 channel heads (pre Multi-Watt). These do not have the same tubes in them (same type, different brands), so bear in mind that some of the (IMO already minor) differences come from the different tubes.