If you're braking hard enough with the front brake to send you over the handlebars, whatever is going on with the rear brake is irrelevant because your rear whe

If you're braking hard enough with the front brake to send you over the handlebars, whatever is going on with the rear brake is irrelevant because your rear wheel is literally lifting off the road and thus cannot possibly contribute meaningfully to braking or traction. In severe emergency braking, it's the front brake alone that matters (and sounds like you used a little too much of it). More info here: https://www.sheldonbrown.com/brakturn.html https://www.sheldonbrown.com/brakturn.html And yeah, I've been there done that going over the handlebars in a situation in which I braked too hard and had my weight too far forward, and it's no fun. Gloves definitely help prevent your hands from getting scratched up in a higher velocity bike collision.