Black Company is still on the to-read pile, so I can't really comment in detail, other than to say Erikson has stated Cook as one of his main inspirations many times. I don't find it suprising that there are similarities.
Of course, take the Bridgeburners out of Erikson's books and you've still got... well, all the other parts
I imagine if you take the Black Company out of Cook's, you're kinda lacking much remaining content.
Add to it the Empress stuff - well, most rulers are portrayed as evil at some point or other if they're not main characters, though I would argue that Laseen is never really portrayed as such if you look at it properly - power-greedy, sure, but who isn't?
But a hack?
Ouch. Kevin J Anderson is a hack. David Eddings is occasionally a hack. Terry Goodkind is a hack. Erikson is
not a hack.