Different frame, different chainstays - you can't expect the chain length to be the same simply because the gearing is the same. Just measure the chain against the bike you're fitting it to - big/big and add a few links, if you're not sure leave it a bit long and see how it works (easier to remove a couple of links than add them. BTW you're counting links wrong - an inner link and its neighbour outer link is two links, not one, new chains are typically 116 or 118 links.