Alive Minato:
1.SM
2.FTG and S/T barrier
3.Rashingan and it varient
4.FTG Kage bushins
5.Uzumaki seals
6.All toad summons
7.Expert close range fighter
8.Expert Sensor
vs
EMS Madara
1.Susanoo varient. including P.S
2.Strong chakra and stamina
3.Tsukuyomi and may be amatersu
4.Kyubi summons
5.Expert close range and long range fighter
Feats
Minato:
1.Yondaime Hokage
2.Defeated A and B or at least drawn the battle
3.Fodderized 1000+ elite ninjas and soloes 3rd shinobi war
4.Defeated Obito and Kyubi
EMS Madara feats:
1.leader of Uchihaa clan
2.Fought with Hashi several times but lost all battles.
3.Once pawned Onoki
Battlefield:
VOTE
I have to go with Madara being stronger. He's levels above Kage level along with Hashirama, Tobirama, and Izuna; their skills were bred to in their constant time of war. Madara is highly skilled in taijutsu, genjutsu, ninjutsu, kenjutsu, have knowledge of sealing jutsus, have high battle tactics, enjoys fighting, is fast himself and have ton more experiences.
Madara knows how to fight a FTG user even though Minato did master FTG beyond Tobirama and has other variation for it such as barrier jutsu and FTG level 2; but Madara isn't going to be fooled by it and would deduce the Kunai's locations. Madara does have knowledge of Senjutsu/SM but we must include that Hashirama didn't show to have toad SM so frog kata might catch him by surprise and we don't know if Minato knows all the Senjutus that Jiraiya knew, Pa toad teaches you after you learn SM and said Naruto learned all senjutsus to an extent but Minato was Jiraiya's student since Genin and Pa toad did know Minato so who knows?
Now, I don't know how well Minato can stand up to Madara who has the best eyes of all Uchihas, high speed himself and experience fighting a FTG user. I don't see how Minato can handle close combat, he can use clones as well so Minato can really use it to surprise attack unless he can set it up right. I can see Minato sealing Susanoo with the 4 triagram seal as he did Kurama (both are chakra) but it still leaves Madara's stats which are all higher than Minato's as well as his battle experience and him being battle smart as well. Saying that, maybe if Minato lived, he would get to a level to beat Madara but that's a what if situation. So unless Minato shows some other skill to put him even close to Madara, I'm going with Madara over all