I don't know , I haven't tried live casino poker to have a personal opinion .
But I read that some players are good at live , some at online , some at both , but generally yeah I have the feeling online is a little tougher , maybe it's the helping programms like the HUDs or other player softwares that helps identifying fish on tables or making best decisions during tournaments , maybe sng's . Banning these tools would be good IMHO .
I have this feeling , online you have to choose more carefully
bankroll , the games you play (when you will play higher limits , etc ) , be more carefull , maybe because players are indeed tougher , but for the time being I don't have enough proof (whether it's tougher indeed or not )
Maybe because I aint good player , plus I don't have live casino experience , only my games and what I read