not exactly, see the zekrom path is essentially a "everyone possible is alive and well and happy" as per ur usual typical fairy tale story, but the reshiram path takes a more dark turn where more people may end up dying and some do a complete 180 with their attitude compared to how they behave in the zekrom path................... and the kicker there is the path u end up walking is all decided on if u battle 1 very specific person or not..............
if you battle them, you walk the zekrom path, if you refuse you walk the reshiram path.............. as for who: i wont say even with a spoiler warning just in case people browsing the forums havent been there yet