well i think sasukes hatred is more then both of them combined lol xD
well right now kurama isns really hated...and doesnt really hate. shukaku on the other hand...well we havnt seen him since part one...i guess right now he takes this one.
I think gaara emotional state made it easier for the one tail to take over. gaara would go berserk in a heartbeat. naruto had more control . karma oonly came out if naruto was in extreme danger or enraged. i debt think the one tails personacity was evil . gaara couldn't control then bond with him . if you notice kazekage gaara had control of the one tail . tailed beast don't respect host who are not in control so they go berserk . if they respect you it seems they work wit you.