Honestly that woman in the 2nd and 3rd video could easily just say what she isn't seeing to make the bitless look better. And WHY does everyone pick the worst possible videos to put together like the 1st..
I see NO difference between the first and second video of that chestnut horse...really, what's your point? He was still strung out, and hollowed, as well as resistent in alot of areas. I think it's more a case of the bit they work him in, does not work well for him; some horses just can't take a certain bit, as it can be uncomfortable for their particular mouth structure, but that does not mean there is not a bit out there for them.
Personally, my mare HATES bitless bridles (I mean the cross over kind like in the vid)...I can ride her in a rope halter, any kind of snaffle, or an english hackemore, but put her in a cross over style bitless and her comfort level goes out the window, so trust me, it's NOT for every horse.
I'm with everyone else. TB in 2nd video bitless looks as unhappy and gives as bad ride as in 1st one with the bit (definitely a training/rider issue rather than the bridle). Bitless is NOT for every horse. Some horses don't like the pressure on nose at all whether it's bitless bridle of flat nose halter (my qh being a good example of it).
REALLY?!?! Everything can do damage if you don't know how to use it properly! Lets not start telling people that bits are terrible for a horse so that they go out and start riding bitless which then these people think that they can just go out jump on there horse and all will be great. By putting these ideas into peoples heads especially inexperienced people someone is going to get hurt. If you know how to use a bit and have proper and regular dental care done on your horse you should have no problem also stay off your horse's mouth. And don't know how to use a certain bit simply ask so that someone will tell you the correct way to use it so you don't hurt your horse. Come on people!