I'm a huge Beastie Boys fan. As the years have gone by, I feel they have only gotten better.
NWA were only around a small period of time and the last time they pretty much did anything was 1991. I'm pretty sure that even Ice Cube and Dr. Dre would both a agree that the Beasties are way better than NWA. The Beasties have always been together, whereas Cube left NWA after their first album and it really wasn't the same after he left. In NWA, Dre was the admitted "studio gangsta", Eazy E was the crazy goofball and Ice Cube was the badass. Once Cube left, NWA kind of lost their edge. Meanwhile, The Beasties have stayed together and matured as artists and individuals since their License to Ill days. They have put out many albums that have had their own distinct sound. As the years progressed, The Beasties decided to pick up instruments for shits and giggles and start playing along to their raps. Did NWA ever even see an instrument in their studio? And, even though The Beasties are white, they always got props from black rappers for having the legit goods.
I do find it kind of humorous that someone would say an artist sucks when they've barely listened to that artist's body of work. The Boys have been on the scene since roughly 1986. They have stayed together and have put out music that actually has a shelf life. Do you think that 20 years from now, folks are gonna sit around and listen to Just Don't Bite It? No way.
Now, back-in-the-day, I thought NWA were the shit. For about 3 years, they were probably one of the most talked about "gangsta" rap groups. But that was 17 years ago. The party has been long over and they only made 2 and a half albums in their time together.
So comparing The Beasties to NWA is like comparing coconuts to walnuts. There is no comparison.
For those unfamiliar with the Beasties albums, I'd suggest the following:
Paul's Boutique
Hello Nasty
Check Your Head
To the 5 Boroughs
Ill Communication