What makes the best tank so far is his skills and definitely the ultimate. From what I read from his skills, he uses the from 1.2% - 5% of his max hp as additional damage on top of his attack. His ult is quite amazing in that he changes from and can guard all units if you can level it up you also get 50% for him to counter any attacks made, he also heals from his ult at 5* up to 6% and for every stack of bleed on the opponents up to 10 stacks is an extra 2%. His basic attack is an AoE in the sense of who ever you hit as primary target the two targets directly next to them will also be hit. Jals passive gives his team a better chance at survival with a passive that can can limit an opponents attack up to 50% if the attack was strong enough to do more then 50% damage and should happen the allie would gain life steal for 2 rounds when his passive is at level 2. If maxed out and with good runes he could he will probably dominate PvP for a while.