In japan, hyrule Warriors wont come close to DW games in LTD sales (currently at 114k with digital), its probably underneath the top 25 games of the franchise there! That said.... Here's is the amusing part!
Hyrule Warriors is already at least #6 best selling Dynasty Warrior game of all time in the US with just 2weeks (9 days) of sales. (avg of DW are 100k-150k in NA)
According to vgc, we dont have US LTD but NA and the top 5 are...
DW4 (PS2) 0.63mil
DW3 (PS2) 0.53mil
DW2 (PS2) 0.24mil
DW5 (PS2) 0.24mil
DW7 (PS3) 0.22mil
HW has 3rd place locked, but it can be the #1 DW game of all time in US!
Also
For those who want to compare Hyrule Warriors numbers in the USA:
Hyrule Warriors - 190,000 (8 days) WiiU
Dynasty Warriors 5 - 150,000 (4 months) PS2
Dynasty Warriors 6 - 220,000 (10 months) PS3/360
Dynasty Warriors 7 - 220,000 (9 months) PS3/360
Numbers taken from NPD and Koei.