Tulsi and Meera love one person and tht is Mihir but look at the difference bet'n their love.
Tulsi thinks that Mihir is happily married with Meera and she doesn't want take away his happiness whereas Meera who claims to love Mihir so much took away all his happiness and made his children away from him.
Tulsi saves Mihir thinking tht a person is in trouble and Meera herself plans accident of the person who she claims to be love of her life.
Tulsi gave mukti to Savita thought Savita behaved very badly with her and made accusations on her whereas Meera killed tht lady who trusted her so much just for the sake tht her reality doesn't come out.
There are even more differences between Tulsi and Meera.
Post any of the difference u find between both of them.