By me saying that they are different i dont just mean they manufactured by Sony and Nintendo... Even though they in the same market they dont sell to the same market segment... For example the wii that outsold both the Xbox and PS3. Nintendos 3DS is not aim at the same market as Sonys Vita, they dont have similar game line ups, the one is more powerful then the other... So even though they both handhelds they arent playing in the same space. If you want to compare unit to unit sales then yes i agree Nintendo out sold Sony, but it doesnt mean they in the same line overally.
lets see the sales figures later on maybe it get better, or maybe it wont... but i believe they shouldnt be pit against each other...