I thought it meant "as long as s/he has done something similar with a similar tool".

Ruby/Python/PHP web CRUD, that kind of thing.

I think it's believable, as long as you have at least a few weeks to play around first. As long as designs are similar, it shouldn't be too hard to port.

Also, any number of "from X language to Y language" pages exist, and they should give you the most obvious caveats.