See this is the problem everyone is comparing the Sorceror to the Wizard, you don't compare the Paladin, Cleric (except maybe in the case of the Favoured Soul), Warlock, Ranger, Fighter, Monk, Bard, Barbarian, Rogue to the Wizard, why the Sorceror?
If anything the two closest classes are the Sorceror and Bard, basically the same sort of spell casting feature (minus ritual cadting in the case of the Sorceror) using the same stat.
Because the wizard and the sorcerer provide the *same* things - focused spellcaster of arcane spell. No one would say "hmm, our party is a bit unbalanced, we don't have an arcane caster" "I agree completely! I will therefore play a Paladin, that will fix the problem!"
They are the closest related classes in the book. Of course they are going to be compared.
We could even say this is the Sorcerer's greatest problem.
The Sorcerer doesn't do much of anything the Wizard can't do. Or should be able to do, as in the case of metamagic.
Make the class more of its own thing - enough to slow the comparisons to Wizard - and problem is solved.
In d20 they managed to have Sorcerers do pretty much the same things Wizards did, only they did it in a sufficiently more flexible and free way. If that isn't on the table, they need to give Sorcerers their own thing to do.
They tried with metamagic, but nobody feels that being able to shoot two rays instead of one is enough to justify being a second-rate arcane caster.
If the Sorcerer isn't meant to be able to fulfil the role of the arcane caster, it needs to be given something truly desirable and unique in return.
The bard is given such toys. Even the warlock is arguably given such toys. Both classes are furthermore given highly visible and easily understood limits on their arcane projection. Nobody mistakes a Bard or a Warlock for a "party's main arcane caster".
The Sorcerer doesn't have that luxury. Unlike the Bard it can do pretty much all kinds of Wizardy stuff. Unlike the Warlock it can cast spells all day long. The fact its spell list is subtly different (and indeed strangely choked off compared to Wizards) is a subtle realization and easy to miss. Reading the class description certainly doesn't clue you in - only careful analysis by a knowledgeable player of the spell lists does. It even shares the exact same spells in previous editions.
So. Yes, the Sorcerer gets compared to the Wizard, and rightfully so. But yes, that's pretty much the core of its problems. Fixing it means weaning us off that comparison.
But so far the class design has not earned that.