WOW!!! I just looked up Boyz II Men's discography on Wikipedia. According to Wikipedia, Boyz II Men's 1st album went 9x Platinum and their 2nd album went 12x Platinum (Their 3rd album in 1997 went 2x Platinum). Also the Christmas album they released in 1993 went 2x album, the remix album they released in 1995 went Platinum, the Greatest hits album they released in 2001 went Gold, and their 4th & 5th albums they released in the early 2000's both managed to go Gold.
If this is the case, Boyz II Men had be the biggest male R&B act (Solo or group) in the 90's.
@#1 pick was right. I've yet to get into Boyz II Men's hits, so I was not aware they were this big.
@stomachlines