Maybe Protoman will have a better ending...
Nope, same ending. He does have one cutscene different from Mega, though. Proto gets Roboenza instead of Mega, and Mega gives him a prototype cure. And it happens after you reach he castle, not before.
As I thought, Easy mode was [tornado fang]ing pathetic. The new platforms added in made getting everywhere so much easier and quicker. It was doubly quick cause I was Proto Man. Enemies shoot less stuff, and some enemies are nonexistent. I think you recover more health from pickups, too. Oh, and there are Yashichis EVERYWHERE.
Proto, interestingly, has a shop run by Auto in a very very unconvincing disguise. Tango's there for no reason other than a cameo. Proto can buy less stuff than Mega can, but they're more expensive. An E Can costs 40 screws for Proto, while Mega only 30. Proto still starts with Proto Jet as well, which is weird. His knockback and defense might be better than in 9, but I'm not sure. I was playing Easy.
I forgot to mention before, but I LOVE that 10 has weapon switching on the shoulder buttons. Pretty much makes the pause menu obsolete.