Paladin still can cast Stoneskin which would make them a more ideal ST. Whilst the warrior with these changes seems to fit the role of a MT more. Will I choose one over the other? Hell no, I choose what my party needs as to what will benefit it the most. There is no more glaring disparity between the two classes where the group can make a unanimous decision on which is more superior.

Single tank fight? Get the Warrior to MT whilst the ST Paladin can focus on Stoneskining from time to time. Add wave fight with boss? Get Paladin to tank while the warrior can supply mitigation and get snap threat on wave adds while doing decent DPS on them in lieu of tanking. Though I do not like the changes of Warrior going mitigation based, the current changes puts each of them in a niche roles which is a good thing.