You can't base how a bike will feel/react when you manual based on the length of the chainstays, it's the complete bike. The whole geometery and how the bike is set up, such as the stem rise, bars e.t.c.
Sometimes bikes will feel really poo to do a certain move and it is all down to one specific, like the stem as i said for an example, being to long/short/rise e.t.c
I'm sure the python copy will be fine for manualing as long as you get it set up right for you, obviously it will be weird at fist as the set up and geometery will be different but you'll get used to it!