New Zealand depth best in the world
Warburton, who became the longest-serving Wales captain during the tour, said he had believed for some time that if there was a World Cup where countries had to put in their fifth or sixth team, New Zealand would be well ahead of anyone else.
"The depth of talent they've got here is frightening really. The amount of talent they've got in this country. That's why coming over here when people were saying they were missing certain players like [Richie] McCaw, Ma'a Nonu, Conrad Smith and all those, it doesn't make a difference.
"They've got fantastic guys who can come in and do a job. They lose a little bit of experience but the talent they've got is incredible and that's why they're the best rugby nation in the world," he told Wales Rugby TV.
Wales had gone into Saturday's third Test in Dunedin hoping to make a good showing in their last appearance but the continual improvement of the All Blacks was greater than the resolve a tired Welsh team could muster.
"We gave it everything out there but they were just way too good for us, in counter-attack. Defensively we were poor, falling off tackles. I don't know what the reason was for that, it was hard to put your finger on and it was just one of those days where they were a heck of a lot better than we were.
"Some days you just have to put your hands up and say you were off it and they were the better team and definitely deserved to win," he added.
Hooker Ken Owens said it was a disappointing outcome in Dunedin as the team had trained well during the week and were confident of getting a result.
"Unfortunately we slipped off a lot of tackles and they hit us on the counter-attack and we turned the ball over. To be fair, they showed how clinical they were and we've got to take it on the chin, we were beaten by a far better side," Owens said.
"The All Blacks were the benchmark, that was why they were two-times World Champions, they set the standard. In certain aspects we were right in the game but our turnover rate was too high. We have to learn from the tour as there were a lot of positives," he added.
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