>>11307808That's hard to summarize, but there are some differences you can spot. Mind you, Bandai very often experiments with what is considered "3.0" (or just plainly newer engineering for characters that have previous iterations), so it's sort of in flux.
Generally, it only applies to characters that get a lot of releases, like your Gokus and Vegetas, and characters that have similar outfits. But it could apply to any character that has either a 1.0 or a 2.0 figure. But since we have half a zillion Gokus and a quarter of a zillion Vegetas, and a good few characters also use Goku's outfit or something similar enough to it, those two are the best ones to compare to. Frankly, Goku and Teen Gohan are the only ones where you can really compare and contrast easily. Maybe Trunks if you look at the Xenoverse Time Patroller figure (which mostly has Trunks' body)
But taking Goku gi/baggy pants outfits as a primary example here, the commonplace differences between 2.0 and 3.0 are:
>Gi sleeves no longer pegged into the back of the figure's arm but instead integrated into the butterfly/shoulder joint and made into an actual sleeve>Removal of the rings between the crotch and the thighs>Dedicated ankle joints that actually try to afford full range, rather than just a ball peg that fits into a hole at the top of the shoe>Better engineered double knee joint with a smoother kneecap that goes along better with the shape of the upper and lower leg of the baggy pants when standing straight and when bent. Also in most cases looks smoother and less bulbous from the back, similar to the elbow joint.>Upper torso forms more of a ribcage shape and the abs join into that, creating a more natural bend and origin of motion than a haphazard straight cut right below the pecs>Elbow joints wider and flatter compared to the more bulbous 2.0 elbow joints, and disappear more into the sculpt of the arms.I'm sure there's more, but those are the main differences I can think of.