No. Schrodinger's wizard is when you assume a wizard has access to all their spells/features at once. But pointing out a warlock's specialization is the opposite because they aren't specialized if they're good at multiple things at once.
But more importantly, so what if your warlock 'might' can be a better ritual caster than a wizard (he still has to find all those rituals whereas the wizard can learn them from all the spells he gets to learn.) Rituals outside of a few specific ones that are mostly wizard rituals just aren't very strong
The warlock doesn't have to find their first two rituals. Which can be from any class. So a warlock can take Purify Food and Drink and Unseen Servant from 1st-level. Something no other class can do, no matter how utility-based they are. And any ritual spell found can be added to the warlock's book as well as the wizard's book. In fact, this is why the warlock is superior, because they can transcribe the ritual spell regardless of the class list, meaning they can copy any ritual the wizard can and more. So if you're playing a ritual-based character, the warlock is a better choice.
Why are you turning this into semantics? You know exactly what I was talking about and it was definitely not that.
If you don't mean limitations by long rests, I don't know what you mean.
Let's assume the warlock is in a structured adventure where a short rest in-between was impossible. How would you make this warlock competent? Well, taking invocations and pacts that give powerful abilities per long rest or at-will would need to be a priority, such that those two spell slots go the extra mile.
A warlock with Bane can debuff the enemy. Yes, other classes can also cast bane, but I have a hard time believing that the cleric's or bard's niche is close to the warlock's. So in terms of choosing a character and assuming you want to have the warlock's niche, taking bane as a long-rest dependent warlock makes no difference. They'd also favor long duration spells over instantaneous spells because they can stretch the spells potential further, so the slot would work to it's maximum potential.