I think not even the PS4 will surpass the PSP. 3ds has at least three more years of life ahead, it may get close or even surpass it, but I personally don´t see that happening.
Anyway... I don´t see a point in comparing a last gen console with current gen. We all know that last gen was a phenomenon that probably will never happen again. Since 2009 consoles sales are down every year and will probably continue to do so.