Show me a sealing jutsu other then Reaper Death Seal that Minato has shown then we can talk.
well ftg uses seals.....The death god, is not a seal other than sealing something in its stomach. The 8 trigrams seal is actually a seal minato did, just useing the deathgod to pull kurama inside naruto, as he did not have time to try to pull kurama in with his chakra. Also he was able to maintain Kushinas seal while she went through child birth(which would require knowledge of seals and how seals work).
What you are saying is almost the same thing as people saying kakashis father was weaker than irukas father, just because it hasnt been shown what his abilities were. When in actuality kakashis father was strong enough to at least be well known(as ninja clearly recognize his name)(and no i doubt the white fang was as strong as the saanin, just as well known as them(according to kakshi gaiden)
So simply put the op is overrateing minatos ability to defeat madara effortlessly, but if able to deal a critical blow to madara, minato would indeed have a sealing jutsu he could use to seal madara.
Saying "a master of fuuinjutsu" only has a suicidal sealing technique is pure bogus.
To something unrelated. I did enjoy teen titans. Though 1 time we tried to dvr a episode, and it got that one episode and then stopped being able to record

. I do know they have a chibi version now...not as good though
Have a great day/night!