if there is an Fernando with Aegis legendary in the other team and no hard hitter in your team, Wrecker is a must pick so you can deal with the shield.
Ash's ult is powerfull and easy to counter(all cc abilities) but you also can make her not even use it, like hook with makoa , torvalds ult , Jennos grip, Shalin's and Cassie's rmb arrow can block her 'Ult jump' or move her ult to other place
Only ingage him when he's low. He can disarm you and make you an easy prey for his damage dealers. He also make your shield useless so you can't use your regeneration card. Try to simply avoid him and focus on the backlines.Hes slow and hasnomobility
No matter if enemy Fernando is an Aggressive Nando or a Defensive Nando, even one good Wrecker dealer can easily disrupt both of these strategies. You reduce his teamwork, self sustain and disrupt abilities.