To be honest I found both to be quite easy xD (I know a lot of people who play Ib can get stuck at some points really easy but I just..got it on my first try lol) I'm still too chicken to finish The Witch's House ;___;
OHhh well I loved Ib oh so much!!!! Well, Ib has a nice story and nice characters!! Witch's House's story is good, depends on your tastes, I found it nice, my friend found it really Woww i wanna cry!! and my boyfriend found it rather bad Witch's House is scary sometimes, and Ib wasnt scary at all, at least for me!! But yeahh I liked both a lot!!