What @AcceptanceIII said! I’ve read the GoT books (before these thank goodness) and they pale by comparison, there is so much more depth in the Malazan universe.
A lot of people (me included) struggle initially as he doesn’t give you any exposition, you’re thrown into the deep end and left to work things out for yourself. This can make the first third/half of the first book tough going, but I would urge you to stick with it!
On second time round the first couple of books make so much more sense!