I think he flipflops a bit on this, but on the whole what do you think?
In Time of the Doctor he describes Ten and the War Doctor etc in a way that suggests completely different persons,
"Ten regenerated once but didn't change his face" instead of "I regenerated once, but didn't change my face"..., before "I had vanity issues back then".
Then there is Ten's lament about him dying and a completely new man walking off after regeneration.
First Doctor called Two and Three "his replacements."
And when he meets himself he completely acts as if he is dealing with different people mostly (timey-whimey shenanigans aside like in time crash).
In Time of the Doctor he describes Ten and the War Doctor etc in a way that suggests completely different persons,
"Ten regenerated once but didn't change his face" instead of "I regenerated once, but didn't change my face"..., before "I had vanity issues back then".
Then there is Ten's lament about him dying and a completely new man walking off after regeneration.
First Doctor called Two and Three "his replacements."
And when he meets himself he completely acts as if he is dealing with different people mostly (timey-whimey shenanigans aside like in time crash).