I disagree with Fuji - 10% is great, as you only pay 10% of the fixed costs, and the rest will rarely seem to want to go flying.
The -140 needs more runway, has a bit of a bite at the stall and poor stall warning, flies around 10-15 knots slower than the -161, and is almost inevitably older, tattier, with less payload. If you're a PA28 experienced mech however, you can work out the condition of it for yourself.
Apart from that, yes, they're substantially the same aeroplane. A good one, based an airport with a reasonable runway and approaches, could be a good first share.
It is basically however a 2-3 seat tourer, don't expect great things!
G