Well,since neros entrance resulted in the deaths/relocations of a lot of people,the effects of all that could be realized in the form of a 'different' Constitution class-if the Constitution as we know it even exists now.
Think of it like this-Assuming someone from the Kelvin would influence the Constitution design,an engineer who 'would' solve a sticky engineering problem on the prototype Connie class instead gets blown into vaccum by Nero .So now the project is delayed,which changes when the ship is finished,which leads to better tech to be fitted,and so forth,leading to a ship that's 'like' the Enterprise but could never be exactly like the old ship due to changes in the timeline.
Also-remember Archers Enterprise still applies here,so before the Kelvin was built Enterprise would represent a flagship name.
Its a personal theory,but in this reality I believe Enterprise is her own class instead of being a part of another ship group,since we never hear a reference to the latest 'X Class' ship,its simply Enterprise.
Which ironically would make sense that the Abrams' Enterprise would have 'been' the Constitution.
Think of it like this-Assuming someone from the Kelvin would influence the Constitution design,an engineer who 'would' solve a sticky engineering problem on the prototype Connie class instead gets blown into vaccum by Nero .So now the project is delayed,which changes when the ship is finished,which leads to better tech to be fitted,and so forth,leading to a ship that's 'like' the Enterprise but could never be exactly like the old ship due to changes in the timeline.
Also-remember Archers Enterprise still applies here,so before the Kelvin was built Enterprise would represent a flagship name.
Its a personal theory,but in this reality I believe Enterprise is her own class instead of being a part of another ship group,since we never hear a reference to the latest 'X Class' ship,its simply Enterprise.
Which ironically would make sense that the Abrams' Enterprise would have 'been' the Constitution.