I am not sure Quartey would beat Mayweather. Different level. Quartey could not even beat Vargas, so how would he beat Mayweather?
That was a prime Vargas at Jr Middleweight, also factor in Ike had a long lay off since the fight with DLH, he came back and fought his first Jr Middleweight fight against a young fernando pre trinidad, and Ike did not do bad at all in that fight, it was close in the end but I also think Ring Rust played a big role in that fight also adJussting to the new weight class as well.
The fight would be competitive for 3 to 4 rounds I think..I think Floyd is to smart for Ike...Floyd wouldn't trade and floyd has much better boxing skills than Ike and he was faster...Floyd UD 116-112