No man.
Mccree counter the majority of dps and supports. But he is Also a tank and shield buster… YOU CANT JUSTIFY THIS MULTIROLE STATUS OF MCCREE, JUST BECAUSE ON A PERFECT WORLD YOU CAN WIN A 1VS1 AGAINST MCCRE WITH ONE TANK!
On the normal world, the mccree Will stay near the supports and You orisa dmg Will don’t do anything against mccree. But he will destroy You shield and head