It's worth noticing that Sorcerers are also better than WIzards at maintaining concentration since they get their proficiency bonus to constitution saves. A sorcerer with decent constitution and warcaster is therefore reasonably safe with maintaining concentration.
Wizards can get concentration proficiency by taking a feat or there might be some item that gives it (I don't recall offhand) but it either costs you a feat or an item slot.
So far this is per RAW, it just interacts with the way Larian designs encounter to make Wizards even worse than Sorcerers.
