Not really. You still have Avatar and you still have your jump out.
Like, at level 1 you either go Q damage for extra burst or healing if you feel like you will have small battles a lot.
Level 4 it is usually Reverberation because it reduces your ultimate (avatar).
Level 7 it is usually damage when they are CCed for extra burst on the target. Depending on enemy team you can go the stun on AAs.
Level 10 Avatar.
Level 13 Bronzebeard for extra damage and incredible sustain.
Level 16 usually trait heal, but imposing presence can be good against heavy AA teams.
Level 20 Rewind because it gives you a better stun slow and reset on E is good for in and out situations.
As you see, even though he got some damage talents at level 1 and 7, most of them are survival/defensive/tank talents.
Muradin definitelly doesn’t get annihilated in teamfights even if you go meme build with jump and haymaker. He is really tanky. Well, if the whole enemy team is CC locking him and dumping all the damage on him, of course he will get killed, but then ANY hero in the whole game would as well. Stun locks into dumping all damage 95% of the time will kill anything.
You never do this, because then you will have 2 main tanks and you will lack waveclear/bruiser. Muradin in an awful bruiser. He has no waveclear and his trade potential is not that great in lane. If this situation ever happens, you want ETC or Joh in the offlane cause they are better options than Muradin. Joh for having waveclear, and ETC post 7 has waveclear + stagedive at 10, but this is just too situational like 0.1% you would do something like this.
It is really not. Again, hp, cc, damage, and all those things are not what define if someone is a tank. It is their kit that defines it, and Muradin’s kit is a tank’s kit.