I don't know the difference between original and black PHB for 2nd ed AD&D. I've played under both without reading either and don't remember every noticing anything. (Not saying it's not there, just that it didn't stand out to me.)
I only played a little bit of 3E, and have never played 3.5 and as far as I know don't own any 3.5 material (I think the last 3E book I got was Savage Species, and I think the last 3E module I got would be from 2001 or 2002). So I only know the differences from reading WotC material and reading threads on these boards. But didn't rangers get new weapon options, and also change from d10 to d8 HD? That seems comparable to the ranger changes from AD&D to 2nd ed AD&D. Bards changed too, didn't they, but not as much I imagine. And monks?
CORRECTION: I also have the revised version of Arcana Unearthed (Arcana Evolved), which is statted for 3E and 3.5 - so to me the differences seem mostly to be in the facing/space rules and the damage resistance rules. But other stuff I've read makes me think there might be more to it than that.
between 3e and 3.5e, a lot of spells were changed - duration, effect, damage, area, etc. And, between 3.5e and Pathfinder, still more spells were changed and in similar fashion. I found it a constant annoyance to have to look up so many changes, "Wait, that was the 3.5e spell, does it do the same in PF? Let's look it up". Just Dispel Magic underwent changes from 3.0 to 3.5, and then was greatly changed moving to PF. (All those "buffing" spells like Bull's Strength, Cat's Grace, etc went from 1 hr/level to 1 min/level and changed from a d4+1 bonus to a flat +4)
The same with feats between 3e, 3.5e and PF as well as skills.
Between 1e and 2e, there were not nearly so many spell changes, and spells take up half the PHB in both editions. They added in cleric spheres/domains, but the spells themselves were generally the same.