It's been incredibly difficult to find an example of an anime IP which saw a platform shift between the first and second entry! In general, they see notable drops, e.g.
Accel World (2012, PS3/PSP) = 48,594
Accel World (2013, PS3/PSP) = 19,818
Fairy Tail (2010, PSP) = 106,939
Fairy Tail (2011, PSP) = 58,875
Though of course Sword Art Online increased between PSP -> PSV. The best example I can find is this:
Puella Magi Madoka Magica (2012, PSP, DRPG) = 96,453
Puella Magi Madoka Magica (2013, PSV, action) = 23,860
I mean sure, there's been a platform shift, but it's been from the leading console of it's generation during the peak of its popularity, to two platforms on the decline and one that might be going up but hasn't shown a massive affinity for Japanese software yet.
By the way - I do think it's going to underperform, don't get me wrong on that. You just quite often seem to have incredibly lofty expectations for certain pieces of PS software that I feel are a bit unrealistic.