dclb vs dcsb

This is probably a dumb question but is the back seat bigger and more roomy on a long bed. I drive a first gen and have never sat in the back of a dclb. My cousin owns a 2011 dcsb and I almost couldnt fit in the back seat. I saw a double cab long bed the other day in town and noticed the rear doors looked longer so this is why I ask.. could have been an illusion

 

Cab size is the same. There's a reason it's called a long BED.

 

well yeah i knew the bed part.. dumb question guys, sorry