That's what I thought, which is what prompted me to impulsively pick up Bumblebee and Berserker which I've since regretted. Although Barricade is a fantastic toy, it may be too early to tell if he's indicative of the quality of the overall TLK line or merely a diamond in the rough.
Yes, they are the same height. Lockdown is 12.5cm to the top of his head in robot mode, same as TLK Barricade. The "Gunhead" mode adds a cm to Lockdown's height.