Count how many jabs GG throws in his fights on youtube and count how many Eubank threw, his out-put couldn`t match GGG`s, everything had to be slow and predictable for Eubank, the pace was always slow aside from his fights with Collins, Watson and Benn where he got caught time and time again,he just can`t fight at a fast pace, GGG had a better jab than Watson, Benn and Collins and Eubank had a reach advantage on Watson and Collins, GGG would have jabbed both those guys into oblivion and he would have over-powered Watson who was bullied around by the stronger punching Eubank, Chris floored Collins, GGG would have finished Steve there and then.
Eubank's biggest flaw is that he took time out in his fights. But you're selling him short here. He was world class and incredibly strong. He was as tough and as strong as what GG is, and GG has a small reach at 70" We don't know if GG would have finished Watson and Collins off at SMW. That's a bold statement to make.
While there is a degree of truth to this. GGG bringing the fight to Eubank would open up allot of countering opportunities and his defense and countering would somewhat slow GGG down. I think it would look somewhat similar to the Alvarez fights.
Benn wasn`t world class when Eubank beat him and Watson was exposed by McCallum Eubank never beat a world class fighter.