Hmm LOL Yeah right. There´s only a difference. Madonna´s top 10s were all hers AND most importantly you could only have one hit song at a time. Pretty much. Seriously, Madonna was sooo much bigger than Rihanna. Not to mention the obvious facts regarding Madonna´s real success with album sales to match the singles success and many more things, like the impact, anticipation (Rihanna could only dream of having the masses anticipating her new album LOL Look at her first week sales throughout her career), touring success, quality and more things. The only time Rihanna´s team decided to go a little bit more serious was last year and it flopped cause nobody takes her seriously, so it got cancelled. That´s how BIG the difference is :)