Nintendo didn't overship Bayonetta 2 and the smash announcement probably increased awareness. A max very, very generous estimation would be 500k worldwide-ish.
What are you talking about because Bayonetta 2 wasn't developed for 5 years or anything near that. More like 2 years full development 3 if we're generous. and Nintendo didn't even fund all that.
170k in 6 month in US and only 500K WW LTD? Easily more
Doesn't sound like 5 years in development