I'm disappointed like you guys about the fall of 12 Spriggan, they were strong and powerful but the only reason they lost is because FT has the strongest demon of book Zeref and if wasn't for h Natsu there they would lose. FT always win because of him , he is too strong. You don't need doubt on 12 spriggan, August the strongest Spriggan member doesn't get any damage since in begging of war and he is only manga character who don't get damage in middle war. Dimaria who has power of time , I bet she could use similar spell like Neo Eclipse to restore time cause Chronos is God of time , Brandish who can destroy a country, Larcade pleasure magic could kill them , God Serena the most powerful wizard saint of Ishgar is Elemental DS slayer , his power could get Acnologia in difficult to defeat him. Irene the scarlet of despair cast a spell where restore entire continent and reduced size , has power to change weather into rain , winter , summer etc... , casted a huge meteor called Deus Sema and is more powerful Jellal magic, Whal a robot who find an enemy weakness, Invel winter general, has amazing magic and had knight warrior into ice , Jacob who is assassin could not see ghost but sense it. 12 spriggan if were participating in universal tournament , they would stomp any warriors of each universe because DBS, Bleach,or one piece like shonen jump anime are not like FT with Friendship power. August could defeat Hit by using coping magic and time skip.
