To say that Casino isn't as good as Goodfellas is quite simply a miscarriage of justice. Those who were involved in Goodfellas are improved: De Niro is able to front the film and play to his strengths, rather than backing up Ray Liotta as he had in Goodfellas. Joe Pesci is the same evil he portrayed in the earlier film, but far better, I personally think his performance in Casino is more deserving of the Oscar he won in 1991 for Goodfellas for best supporting actor. Sharon Stone is absorbing as Ginger McKenna, who finds herself unable to resist De Niro's marriage offer, contrary to what perhaps she really wants. This film isn't as cosy as Goodfellas, you cannot relate to Casino in the same way as the former. It wasn't as fast-paced as Goodfellas, but was longer, louder, more colourful, more violent, more full of obscenities, but most importantly, contained stronger performances from all involved. Frank Vincent and James Woods stand out in a well acted supporting cast.
I love Goodfellas, it is a great film, but people should acknowledge that Casino is an epic film; gritty, brutal, real, and every bit as good as, if not better, than it's much heralded predecessor.