[snip]I have no idea how people have trouble with the controls. They're easy to master and play.[snip]
Speaking as a person that labeled the controls "clunky," it's not that I had trouble with them, per se. I simply dislike having all movement on one stick, and having that stick double as the aim-control when aiming / firing a weapon.
I've gotten so use to modern-day controls where you use both sticks simultaneously to maneuver that, when I tried to play RE4 HD off of XBLA it felt "clunky." Mostly due to the fact that you can't move and shoot.