Here they are almost always identical in size. Annoying though, even before I wore my hair curly, or even before I knew it was curly I always had to use much more conditioner than schampo, just to detangle. Schampo you mainly need for your scalp and it lathers up and is easy to just wash the rest of the hair with a small amount. Conditioner however... Still remember my battles with my mum who claimed that you should only use a coin-sized amount of conditioner, especially with long hair but that it took large amounts of schampo to get it properly clean. Needless to say, when she had long hair it was stick-straight and she rarely combs her hair ever, so the concept of actively needing to detangle was and is completely foreign to her. Maybe it's meant for people like her?
CG since 8th of September 2013 - learning in progress!

3a/m/iii - waist length wet
Cleanser: Naturelle Volumizing
Conditioner/LI: Garnier Respons Avocadooil and Shea Butter, Schwarzkopf Gliss Ultimate Volume Conditioner
Styling: Eldorado Hairgel Strong