Just played a game against him on topside and he went full armor with a frozen mallet. He barely took any damage and dished out tons of damage. We couldn't even 1v3 him at all. What else is that our Lux mid, who was fed, dealt little to no damage to him and all he had was armor. Either there is a bug with him right now as I type this or he's in need of a serious nerf. Because there is so much that isn't right with him entirely.
This isn't a bug report... This is a QQ thread. A bug report would include something like, "every time Mordekaiser auto'd me, he dashed 3 treemo's distance."
And, it doesn't appear to have been a ranked game because it didn't show up in your match history. Copy and paste the link from the match so that people can actually determine what the problem was.
Constructive answer
I got a look at the match and here are my insights on the matter:
These 3 factors made him the perfect tank, and I guess your melees didn't care much of focusing others and just tried to fight off Mordekaiser (which is the biggest mistake you can do especially when he is fed).
Did anyone think to buy 
?
