i like FF7 a lot and its definetly on my top 5 FFs but FFX-2 was terrible.
ive never seens the sad ending for FFX-2. i knew it was there but i couldnt bear the shame of losing the easiest game ever even if it would have been on purpose. seems as vegnaguns cannon could destroy the world its probly vegnaguns cannon but the sister ray in FF7 destroyed that shield and could of probably done mych more damage so i think there quite even on power but FF7 doesnt clearly state the power of the sister ray which is why i say vegnagun unless proven otherwise.