Using MS Paint, I traced over characters introduced in the OT with blue, then I traced over characters introduced in the PT with green.
(the ones I didn't trace over are ones I don't know)
Seriously, look how much green (PT characters) there are than blue (OT characters). Notice how they made Vader, R2, and 3P0 huge compared to the other characters just to try and make the OT seem a bit bigger. roflmao