vaders limitations
ok when vader first got into the suit he is only half of ROTS anakin skywalker sources from the ROTS novel but i believe he regains his powers 19 years after the incident. in that 19 years he mastered grip, learnt crush possibly after the purge, had a stronger connection to the force and more experienced and mastered Djemso/shien.
his limitations for being in the suit are
1. he cant do lightning without risking it messing his life support
2.he cant force jump as high as pre burnt
3. he has less midichlorians and cant achieve his full potential
(his hacked lumbs caused this my opinion if its just the suit he wore without his lost limbs he still could get to his full potential)
gl stated as anakin skywalker he was roughly 80% of the emperor.
when he got hacked and burnt he only became 40% half of what he is,
as time grew on he regained his powers, like in TESB when he choked his commanding officer a long distance away in the meditation chamber which anakin in ROTS had trouble killing padme at close range.
vader i think is 80% after he regained his strength and got used to the suit. anakin is more on the lightsaber agility while vader is on strength and stronger in the force.
lets please not go into full potential anakin, that guy is equal to NJO luke who would stomp on every ones ass